Subtracting 1-Digit Number

In subtracting 1-digit number we will subtract or minus one-digit number from one-digit number or one-digit number from 2-digit number and find the difference between them.

We know that subtraction means to take away a set of objects from a collection.

$Subtracting 1-Digit Number from 1-Digit Number$

We use – sign to take away

9 - 6 = 3

We say that difference between 9 and 6 is 3.

When we subtract 0 from a number, the number remains the same.

$Subtract 0 from a Number$

When we subtract the number from itself we get 0.

$Subtract the Number from Itself$

If from six things we take away 2 things, then four things are left. In arithmetic this is written in a short way as follows:

6 – 2 = 4

The symbol – is called the minus sign and shows that the number written after it is to be subtracted, or taken away, from the number written before it.

We may read 6 – 2 = 4 as ‘six minus two is equal to four’ or ‘six less two is four’.

How to subtract two one-digit numbers?

1. Here we will find 2 – 1.

Follow the steps along with the picture:

$Subtracting 1-Digit Number$

(i) 2 – 1 means start with 2 and take away 1.

(ii) From 2 strokes we take away 1 stroke and cancel the strokes.

(iii) So, 1 stroke is left.

(iv) Therefore, 2 – 1 = 1

We may read 2 – 1 = 1 as ‘two minus one is equal to one’ or ‘two less one is one’.

2. Here we will find 5 – 3.

Follow the steps of subtracting 1-digit number along with the picture:

$Subtract Two 1-Digit Numbers$

(i) 5 – 3 means start with 5 and take away 3.

(ii) From 5 strokes we take away 3 strokes and cancel the strokes.

(iii) So, 2 strokes are left.

(iv) Therefore, 5 – 3 = 2

We may read 5 – 3 = 2 as ‘five minus three is equal to two’ or ‘five less three is two’.

3. Here we will find 7 – 2.

Follow the steps along with the picture:

$Subtract Two Numbers$

(i) 7 – 2 means start with 7 and take away 2.

(ii) From 7 strokes we take away 2 strokes and cancel the strokes.

(iii) So, 5 strokes are left.

(iv) Therefore, 7 – 2 = 5

We may read 7 – 2 = 5 as ‘seven minus two is equal to five’ or ‘seven less two is five’.

4. Here we will find 9 – 5.

Follow the steps of subtracting 1-digit number along with the picture:

$Two One-Digit Numbers Subtraction$

(i) 9 – 5 means start with 9 and take away 5.

(ii) From 9 strokes we take away 5 strokes and cancel the strokes.

(iii) So, 4 strokes are left.

(iv) Therefore, 9 – 5 = 4

We may read 9 – 5 = 4 as ‘nine minus five is equal to four’ or ‘nine less five is four’.

5. Here we will find 8 – 8.

Follow the steps of the subtraction of 1-digit number along with the picture:

$Two 1-Digit Numbers Subtraction$

(i) 8 – 8 means start with 8 and take away 8.

(ii) From 8 strokes we take away 8 strokes and cancel the strokes.

(iii) So, 0 strokes are left.

(iv) Therefore, 8 – 8 = 0

We may read 8 – 8 = 0 as ‘eight minus eight is equal to zero’ or ‘eight less eight is zero’.

Questions and Answers on Subtracting 1-Digit Number:

1. Cross out 6 objects and find the difference.

$Cross Out 6 Objects$

Answer:

1. (i) 6

(ii) 9

2. (i) Take away 0 from 9. How many left? _____

(ii) Take away 6 from 6. How many left? _____

Answer:

2. (i) 9

(ii) 0

3. Subtract and find the difference.

(i) 18 - 7 = _____

(ii) 14 - 3 = _____

(iii) 18 - 8 = _____

(iv) 16 - 4 = _____

(v) 19 - 9 = _____

(vi) 15 - 2 = _____

Answer:

3. (i) 11

(ii) 11

(iii) 10

(iv) 12

(v) 10

(vi) 13

4. Find the difference.

(i) 27 - 5 = _____

(ii) 88 - 6 = _____

(iii) 67 - 2 = _____

(iv) 48 - 8 = _____

(v) 39 - 3 = _____

(vi) 55 - 5 = _____

(vii) 49 - 1 = _____

(viii) 19 - 5 = _____

Answer:

4. (i) 22

(ii) 82

(iii) 65

(iv) 40

(v) 36

(vi) 50

(vii) 48

(viii) 14

5. There are 45 students in a class. 7 students were absent on Friday. How many students were present in the class on Friday?

Answer:

5. 38

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