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In this worksheet, students add or subtract ten to work out what number goes in to or comes out of the Add Ten Machine.

Key stage:

Curriculum topic:

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### QUESTION 1 of 10

This machine adds 10 to every number that goes in.

Here, 32 goes in.

So 42 comes out: 32 + 10 = 42

You can subtract, too: 42 - 10 = 32

10 goes into the machine. What number comes out?

6 goes into the machine. What number comes out?

8 goes into the machine. What number comes out?

20 goes into the machine. What number comes out?

40 goes into the machine. What number comes out?

12 comes out of the machine. What number went in?

15 comes out of the machine. What number went in?

21 comes out of the machine. What number went in?

40 comes out of this machine. What number went in?

45 comes out of the machine. What number went in?

• Question 1

10 goes into the machine. What number comes out?

20
EDDIE SAYS
10 + 10 = 20
• Question 2

6 goes into the machine. What number comes out?

16
EDDIE SAYS
6 + 10 = 16
• Question 3

8 goes into the machine. What number comes out?

18
EDDIE SAYS
8 + 10 = 18
• Question 4

20 goes into the machine. What number comes out?

30
EDDIE SAYS
20 + 10 = 30
• Question 5

40 goes into the machine. What number comes out?

50
EDDIE SAYS
40 + 10 = 50
• Question 6

12 comes out of the machine. What number went in?

2
EDDIE SAYS
2 + 10 = 12

or

12 − 10 = 2
• Question 7

15 comes out of the machine. What number went in?

5
EDDIE SAYS
5 + 10 = 15

or

15 − 10 = 5
• Question 8

21 comes out of the machine. What number went in?

11
EDDIE SAYS
11 + 10 = 21

or

21 − 10 = 11
• Question 9

40 comes out of this machine. What number went in?

30
EDDIE SAYS
30 + 10 = 40

or

40 − 10 = 30
• Question 10

45 comes out of the machine. What number went in?

35
EDDIE SAYS
35 + 10 = 45
---- OR ----

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