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.

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.

When we subtract the number from itself we get 0.

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**’.

We have learnt that we can subtract numbers by counting backward.

8 - 3 = ?

Counting backward from 8, take jumps backward. You reach 5.

How to subtract two one-digit numbers?

**1.** Here we will find 2 – 1.

Follow the steps along with the picture:

(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:

(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:

(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:

(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:

(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**’.

**SUBTRACTION PROPERTIES**

Let us learn the properties of subtraction.

**Subtraction of 0**

What do you get when you subtract 0 from a number?

When 0 is subtracted from a number, the difference is the number itself.

**Try This!**

**Fill in the boxes.**

6 - 0 = _____

5 - 0 = _____

_____ - 0 = 7

9 - _____ = 9

**Subtraction of 1**

What do you get when you subtract 1 from a number?

When 1 is subtracted from a number, the difference is the previous number.

**Try This!**

**Fill in the boxes.**

5 - 1 = _____

8 - 1 = _____

_____ - 1 = 7

9 - _____ = 8

Questions and Answers on Subtracting 1-Digit Number:

**1. Cross out 6 objects and find the difference.**

**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. Subtract the following:**

(i) |
8 ________ |
(ii) |
1 3 ________ |

(iii) |
4 4 ________ |
(iv) |
1 8 ________ |

**Answer:**

**5.** (i) 6

(ii) 12

(iii) 42

(iv) 15

**6. Fill in the blanks:**

**Answer:**

**6.** (i) 5

(ii) 7

(iii) 4

(iv) 3

**7. Find the difference.**

(i) 8 - 0 = 8

(ii) 6 - 0 = _____

(iii) 9 - 0 = _____

(iv) 4 - 0 = _____

(v) 5 - 0 = _____

(vi) 7 - 0 = _____

**Answer:**

**7. **(ii) 6

(iii) 9

(iv) 4

(v) 5

(vi) 7

**8. Find the difference.**

(i) 4 - 1 = 3

(ii) 8 - 1 = _____

(iii) 7 - 1 = _____

(iv) 3 - 1 = _____

(v) 5 - 1 = _____

(vi) 2 - 1 = _____

(vii) 6 - 1 = _____

(viii) 9 - 1 = _____

**Answer:**

**8. **(ii) 7

(iii) 6

(iv) 2

(v) 4

(vi) 1

(vii) 5

(viii) 8

**9. Subtract on Abacus. One has been done for you.**

**Answer:**

**9.** (ii) 45

(iii) 42

**10. Fill in the boxes. One has been done for you.**

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

**Answer:**

**11. **38

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