# Know Your Subtraction: Subtracting one (0-20)

In this worksheet, students practise subtracting the number 1. Key stage:  KS 1

Curriculum topic:   Number: Addition and Subtraction

Curriculum subtopic:   Add and Subtract to 20

Difficulty level:   ### QUESTION 1 of 10

Subtraction is taking of one number or amount away from another.

Example

Look at this subtraction.

10 - 1 = ?

Start at 10 and count 1 backwards. 10 - 1 = 9

Write the answer to the subtraction. 4 - 1 = ?

Write the answer to the subtraction. 20 - 1 = ?

Write the answer to the subtraction. 5 - 1 = ?

Write the answer to the subtraction. 13 - 1 = ?

Write the answer to the subtraction. 18 - 1 = ?

Write the answer to the subtraction. 6 - 1 = ?

Write the answer to the subtraction. 2 - 1 = ?

Write the answer to the subtraction. 1 - 1 = ?

Write the answer to the subtraction. 15 - 1 = ?

Write the answer to the subtraction. 10 - 1 = ?

• Question 1

Write the answer to the subtraction. 4 - 1 = ?

3
EDDIE SAYS

Method

4 - 1 = 3

• Question 2

Write the answer to the subtraction. 20 - 1 = ?

19
EDDIE SAYS

Method

20 - 1 = 19

• Question 3

Write the answer to the subtraction. 5 - 1 = ?

4
EDDIE SAYS

Method

5 - 1 = 4

• Question 4

Write the answer to the subtraction. 13 - 1 = ?

12
EDDIE SAYS

Method

13 - 1 = 12

• Question 5

Write the answer to the subtraction. 18 - 1 = ?

17
EDDIE SAYS

Method

18 - 1 = 17

• Question 6

Write the answer to the subtraction. 6 - 1 = ?

5
EDDIE SAYS

Method

6 - 1 = 5

• Question 7

Write the answer to the subtraction. 2 - 1 = ?

1
EDDIE SAYS

Method

2 - 1 = 1

• Question 8

Write the answer to the subtraction. 1 - 1 = ?

0
EDDIE SAYS

Method

1 - 1 = 0

• Question 9

Write the answer to the subtraction. 15 - 1 = ?

14
EDDIE SAYS

Method

15 - 1 = 14

• Question 10

Write the answer to the subtraction. 10 - 1 = ?

9
EDDIE SAYS

Method

10 - 1 = 9 