Maths Dictionary 9780993261510

Table of contents :
General Words
Numbers
Sizes
Currency
Shapes
Index

Citation preview

For Teachers, Students & Parents

Fareeda Abbasi MATHS DICTIONARY

Youth Together for Human Rights Education

Youth Together for Human Rights Education The curriculum of Youth Together for Human Rights Education enables application of knowledge to life. It is designed to improve skills and bring about positive attitudes. We train teachers, students and parents on an ongoing basis across schools and universities. We are committed to creating a future where men, women and children grant respect to each other, irrespective of age, gender, race, religion, sect, ethnicity, nationality or class. A future where peace and tolerance prevails. A fair and just society, where students grow up reaching their full potential and are rewarded for their own efforts, skills and contribution. Our series of books forms the start of a journey, directed towards reaching this shared dream with you.

©2015 Fareeda Abbasi. All Rights Reserved. Printed in Pakistan by Youth Together for Human Rights Education

ISBN: 978-0-9932615-1-0 No part of this booklet may be reproduced or transmitted in any form by any means, graphics, electronics, or mechanical, including photocopying, recording, taping, or by any information storage or retrieval system without permission in writing from the publisher. 2

MATHS DICTIONARY

This Book Just as without knowing the alphabet it is impossible to know the language, so, without fully understanding the words used in the subject of Maths, we cannot expect the learner to master the subject. During the process of learning it is important to emphasise an understanding of the concepts of words. Words like “house”, “apple” are understood by the student. There is no need to memorise them. However, for words like “divisor”, “ascending”, “geometry”, the same clarity in understanding may not exist. This book helps to provide that clarity. It helps to build a strong foundation of the subject. It forms part of the resources needed by teachers, parents and students to put the child on the ladder of competence. We believe every student has the potential to master a subject and to be good in all subjects, not in just one or two. Our series of books aims to build a strong foundation of the subject for the learner. It is the duty of teachers and parents to provide the tools, guidance and an environment that enables children to reach their full potential. If you wish for the child to become an independent learner and excel in Maths, then this book belongs in your special tool-kit.

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Dedication This book is dedicated to the teachers, parents and children of the world. Our sincere hope is that this book helps you and those you care about to understand and love the subject. Through a strong basic foundation of the subject and with your competence and imagination, may you help create a better and peaceful world for all. Our best wishes are for you.

Contents Topic Page General Words ..................................................................................... 6 Numbers ................................................................................................ 15 Sizes ......................................................................................................... 28 Currency................................................................................................. 30 Shapes .................................................................................................... 32

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General Words from

B.

Run from A to B.

A.

The place where we should start. The starting point.

That means that we should start running from A.

to Used to show the end of something. The end or finish point.

missing Something that is lost. Anything which is not there that should be there.

Read pages 10 to 22. This means we should stop reading at page 22. Page 21

Page 22

There were 4 students present in the morning.

There are only 2 students present in the afternoon.

Two students are missing.

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compare To see or say how things are different or the same.

The colours of the balloons are different.

The apple and pear are a different shape.

The colours of the pencils are the same but the sizes are different.

The balls have a different colour and a different shape.

comparison The differences in two or more things or how they are the same.

Comparison between a circle and a square. This means that we need to find the difference in a circle and a square and how they are the same.

Answer: Both a circle and a square are shapes. A circle is round and a square is not. A square has sides and a circle does not.

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skip

If you jump from the third step to the fifth step, then you skip the fourth step.

To leave something or not do something and go ahead.

If you eat 1 banana a day and 5 in one week, then you can skip Tuesday and Friday.

Mon.

Tue.

Fri.

Wed.

Sat.

Thur.

Sun.

even A number that can be divided exactly by two. Even numbers end with 0, 2, 4, 6 or 8.

(2)

(4)

(6)

(8)

(10)

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odd A number that cannot be exactly divided by two. Odd Numbers end with 1, 3, 5, 7 or 9.

(1)

(3)

(5)

(7)

(9)

table A list of numbers or things known to be true, that are placed in some order. Example: At the start of this book we have a table of contents which tells us the topics in order of page number.

forward

The boy is going forward.

The man on his bike is going forward.

To go ahead. To move ahead. To move in front of you.

Example: Forward from 20 is 21, 22, 23, 24,…

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backward To go back. To move back.

The man going from A to B is moving forward. Then going from B to A he is going backward.

A.

B. Example of numbers going backward.

20 19 18 17 16 15 14 13 12 11 word A combination of letters of the alphabet in a language, which means something and that we can speak or write.

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We are sometimes asked to write in words the number or amount. Example: If we need to write 250 in words in English, then we would write -- two hundred and fifty.

24 25 26 27 28 29

twenty four twenty five twenty six twenty seven twenty eight twenty nine

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find

I will find my friend in the playground.

To locate something by looking or searching.

I will find the right piece to solve the jigsaw puzzle.

identify

Can you identify what this is?

Can you identify what this is?

To know or say what something is.

This is a key.

This is an apple.

ascending To go up from low to high.

Can you ascend the steps?

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The aeroplane is ascending.

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descending To come down from high to low.

Can you descend the steps?

order The way that you put people or things together. The way you arrange something.

The helicopter is descending.

I placed the pens in order of their colour.

I placed the dolls in order of their size.

I placed the violins in order of their size.

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quantity

How many people?

How many - given as a number.

Is the quantity 14?

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solve To find an answer to a question, problem or puzzle.

2+3=5

8+2

= 10

2 8-

=6

recognize To identify. To know or say what something is. Do you recognise this? She recognised the ball.

It is a pencil. Do you recognise this? It is a penguin.

maths About numbers, quantity and shapes. MATHS DICTIONARY

How many plants?

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measure

I measured the red paper with the ruler.

To find the number that shows the size or amount of something.

I will measure the milk in this jug.

I will measure my weight on the scale.

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Numbers number A word or symbol that represents an amount or a quantity. Example: two or 2.

209 Two hundred and nine 1209 One thousand two hundred and nine

count To say numbers in the right order. Example: 1,2,3,4,5.

counting Saying numbers in the right order.

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I am counting...... 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17,18 19, 20, 21.......

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from number The starting point. The number we should start with.

to number The end number. The last number.

units Numbers from 0 to 9.

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Example: Count from number 3. This means that we should start counting from the number 3.

3

4

5

6

7

8 ...

Count from number 3 to number 12. This means we should stop counting at number 12.

3 4 5 6 7 8 9 10 11 12

0 1 2 3 4 5 6 7 8 9

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tens Numbers from 10 to 99.

(tens-7) Example:

(units-8) 78

hundreds Numbers from 100 to 999.

(hundreds- 1) Example:

missing number A number which is not there.

(tens -2 )

(units-6)

126

In these even numbers find the missing numbers: 2, 4, 6, 8, 12, 14, 18, 20, 22 Answer: The missing numbers are 10 and 16. Find the missing number: 31, 32, 33, 34, 35, 37, 38 39, 40, 41 Answer: The missing number is 36

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ascending order To put or go from the smallest to the largest number.

Arrange in ascending order: 6, 11, 13, 15, 8, 3, 9, 5, 12

This means we should write the smallest number first and then continue to the largest number. 3, 5, 6, 8, 9, 11, 12, 13, 15

descending order To put or go from the largest to the smallest number.

Arrange in descending order: 13, 7, 4, 8, 3, 10, 9, 12

This means we should write the largest number first and then continue to the smallest number. 13, 12, 10, 9, 8, 7, 4, 3

compare numbers To see or say how numbers are different or the same.

Compare 5 and 3

True

False

Are 5 and 3 equal? 5 is greater than 3 by 2.

Are 5 and 3 odd numbers? 5 and 3 are both odd numbers.

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symbols which show a comparison between numbers

21 4 is greater than 1 3 = 2+1 3 equals 2 plus 1

< >

less than < greater than > equal to =

comparison of numbers To tell what is different in the numbers shown. Less than < Greater than >

ordinal number A number that shows a place or position in a series.

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= 2 , 50 : 42 , 30 :

2 is less than 50. 42 is greater than 30.

2 < 50 42 > 30

13 + 30 is greater than 21 + 15 13 + 30 > 21 + 15 50 – 43 is less than 9 50 - 43 < 9

1st, 2nd, 3rd - first, second, third are ordinal numbers. 10th ,22nd, 53rd are ordinal numbers. Arif wanted the third (3rd) book on the bookshelf. 3rd is an ordinal number.

19

cardinal number A number showing quantity.

skipping numbers Counting forwards or backwards by a number other than 1.

Example: 1, 2, 3 - One, two three are cardinal numbers.

I see 3 ducks. The cardinal number is 3 in the above sentence.

Can you count forward by skipping 2? Answer: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22

Can you count backward by skipping 5, starting from 80 ending on 45. Answer: 80, 75, 70, 65, 60, 55, 50, 45.

even numbers Numbers that can be divided exactly by two.

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Even Numbers end with 0, 2, 4, 6 or 8.

8 2 72 134 56 16 10 188 2 616 82

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odd numbers

Odd Numbers end in 1, 3, 5, 7 or 9

7 1 71 133 55 19 183 2 619 17 83

Numbers that cannot be exactly divided by two.

place value The place value tells where the digit is in the number, such as is it in units place, tens place, hundreds place, etc.

Example: What is the place value of numbers 1, 4, and 3 in the number 143? Hundreds Units Tens 1 3 4

number 143

addition

+

+

A method by which you put together two or more numbers to get one number.

= 3+2 = 5

2+2 = 4

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add

+

To put together two or more numbers to get one number.

39 +

41 =

1+1

5

80

=2

10

+

1 = 5

71 + 133=204

subtraction A method by which you take one number away from another to get another number.

7-5 = 2

2-1 = 1

subtract

-

Taking one number away from another to get another number.

15 - 12 = 3 6-1 =5

11 =

71 - 3= 68 1-1=

22

39 -

0

10

-

28

5 = 5

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multiply

x

To make a number bigger by a given number of times.

Example: Each student needs 2 books. I have 3 students. How many books do I need? 2x3=6 2 is made bigger by 3 times. 2+2+2=6

Example: 8 x 9 = 72 8 is made bigger by 9 times. 8 + 8 + 8 + 8 + 8 + 8 + 8 + 8 + 8 = 72 1

2

5

6

7

8

9

What is the multiplier in the following?

The number that you are multiplying by.

2x3=6 3 x 5 = 15

The multiplier is 3. The multiplier is 5.

Make 2 bigger by 5 times: 2 x 5 =10

multiplication

Make 6 bigger by 3 times 6 x 3 = 18 10 x 11 = 110 10 is made bigger 11 times. 10 + 10 + 10 + 10 + 10 + 10 + 10 + 10 + 10 + 10 + 10 = 110 1

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4

Example: In 2 x 4 = 8 The multiplier is 4.

multiplier x

A mathematical way of making a number bigger by a certain/ given number.

3

2

3

4

5

6

7

8

9

10

11

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divide

÷ or /

Example: I have 8 balls and want to divide these equally between 2 students. How many does each get?

To split or make something into equal parts.

8 ÷ 2 = 4 8 is split into 2 equal parts 4+4=8

Example: 72 ÷ 8 = 9 72 is divided into 8 equal parts. 9 + 9 + 9 + 9 + 9 + 9 + 9 + 9 = 72 1,

divisor

4,

5,

6, 7,

8

Example: In 6 ÷ 3 = 2 The divisor is 2.

The number you divide by.

What is the divisor in the following? 40 ÷ 5 = 8 The divisor is 5. 35 ÷ 7 = 5 The divisor is 7.

division ÷ or /

Split 21 into 7 equal parts. 21 ÷ 7 = 3

The method by which you are splitting or making something into equal parts.

Split 15 into 3 equal parts. 15 ÷ 3 = 5 110 ÷ 11 = 10

110 is split into 11 equal parts.

10 + 10 + 10 + 10 + 10 + 10 + 10 + 10 + 10 + 10 + 10 = 110 1

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2, 3,

2

3

4

5

6

7

8

9

10

11

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dividend The number you are dividing.

multiplication tables A list of numbers that shows you the results of multiplying one number with a other numbers in sequence. Usually from 1 to 12.

forward counting To say numbers in ascending order. To say numbers by adding 1 to each number.

MATHS DICTIONARY

Example: In 6 ÷ 3 = 2 The dividend is 6. What is the dividend in the following? 40÷ 5 = 8 The dividend is 40. 35 ÷ 7 = 5 The dividend is 35. Multiplication Table of 2

Multiplication Table of 6

2 is multiplied by a sequence of numbers, 1, 2, 3, 4... 12

6 is multiplied by a sequence of numbers, 1, 2, 3, 4... 12

2x1 =2 2x2 =4 2x3 =6 2x4 =8 2 x 5 = 10 2 x 6 = 12 2 x 7 = 14 2 x 8 = 16 2 x 9 = 18 2 x 10 =20 2 x 11 =22 2 x 12 = 24

6x1=6 6 x 2 = 12 6 x 3 = 18 6 x 4 = 24 6 x 5 = 30 6 x 6 = 36 6 x 7 = 42 6 x 8 = 48 6 x 9 = 54 6 x 10 = 60 6 x 11 = 66 6 x 12 = 72

Example: Forward counting from 6.

Example: Forward counting from 90. 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109...

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backward counting To say numbers in descending order. To say numbers by subtracting 1 from each number.

write in words To write the number or amount in a language using the alphabet.

find missing numbers To look for the number which are not there or not given.

Example: Backward counting from 11.

Example: Backward counting from 90. 90, 89, 88, 87, 86, 85, 84, 83, 82, 81, 80, 79, 78, 77, 76, 75, 74, 73, 72, 71, 70, 69...

Example: if we need to write 250 in words in English, then we would write:

Two hundred and fifty.

Example: if we need to write 97 in words in English, then we would write:

Ninty seven.

Find the missing numbers: 102, 103, 104, 106, 107, 108, 112

The missing numbers are: 105, 109, 110, 111

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MATHS DICTIONARY

identify odd and even numbers To tell if a number is an odd number or an even number.

digit A number that can be from 0 to 9. It can be part of a number.

Identify odd and even numbers: 2, 49, 80, 13, 6, 5, 78, 3, 20, 9, 83

Answer: Even numbers: 2, 80, 6, 78, 20 Odd numbers: 49, 13, 5, 3, 9, 83

Does the digit 7 occur in any of the following numbers? 17, 109, 65, 47, 653.

The digit 7 occurs only in the numbers: 17, 47

equation In Maths, an equation says that two things are the same by using an equal (=) sign.

MATHS DICTIONARY

Examples: 6÷3 =2 6 x 4 = 24 35 + 7 = 42

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Sizes size How large or small something is.

object A thing that you can see and touch.

height How far something is from the bottom to the top. The distance of something from bottom to top.

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weight How heavy somebody or something is.

The box is heavy. To carry the weight a truck is needed to lift it.

length How long something is. The distance from one end to the other end.

You can measure the length with a ruler or tape measure.

width How wide something is. The distance from one end to the other end.

MATHS DICTIONARY

height (h)

width (w)

length (l)

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Currency money A small round coin or a piece of paper (called a note) that you use to buy something.

currency

The currency used in America is Dollars. Pakistan uses Rupees.

The money that a country uses.

rupees Rupee is the currency of Pakistan. We write rupees in short as Rs.

30

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note A piece of paper that you use to buy something.

coin A small round metal thing that you use to buy something.

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Shapes shape The thing you see when you draw a line around something.

geometry The study about shapes and anything which is related to shapes.

geometric Anything which is in geometry. Anything which is related to shapes.

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circle A round shape which is always the same distance from the centre.

square A shape with four straight sides and all sides are equal in length.

rectangle A shape with four straight sides and in which opposite sides are equal in length.

triangle A shape with three straight sides.

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oval A round shape which is not a circle and looks like an egg.

identify shapes

In the shapes given below Identify the oval.

To say which shape you see.

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Index add

22

find missing numbers

26

addition

21

forward

9

ascending

11

forward counting

25

ascending order

18

from

6

backward

10

from number

16

backward counting

26

geometric

32

cardinal number

20

geometry

32

circle

33

height

28

coin

31

hundreds

17

compare

7

identify

11

compare numbers

18

identify odd and even numbers

27

comparision

7

identify shapes

34

comparision of numbers

19

length

29

count

15

maths

13

counting

15

measure

14

currency

30

missing

6

descending

12

missing number

17

descending order

18

money

30

digit

27

multiplication

23

divide

24

multiplication tables

25

dividend

25

multiplier

23

division

24

multiply

23

divisor

24

note

31

equation

27

number

15

even

8

object

28

even numbers

20

odd

9

find

11

odd numbers

21

order

12

ordinal number

19

oval

34

place value

21

quantity

12

recognize

13

rectangle

33

rupees

30

shape

32

size

28

skip

8

skipping numbers

20

solve

13

square

33

subtract

22

subtraction

22

symbols

19

table

9

tens

17

to

6

to number

16

triangle

33

units

16

weight

29

width

29

word

10

write in words

26

In the making of this book the author acknowledges the efforts of: Staff of Azeem Paradise School, Youth Together for Human Rights Education and Mr. Usaid Ghauri. Your dedicated efforts will create brilliant students. Thank you! Write to the author at [email protected]

Youth Together for Human Rights Education

For Teachers, Students & Parents

www.ythre.org [email protected]

www.ilovewords.org

0311-2050292

021- 34383909

ISBN: 978-0-9932615-1-0

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www.ythre.org www.ilovewords.org

MATHS DICTIONARY