# Add Two Two-Digit Numbers (1)

In this worksheet, stuents add two-digit numbers by adding the units, then adding the tens and combining the results.

Key stage:  KS 2

Curriculum topic:   Maths and Numerical Reasoning

Curriculum subtopic:   Mixed Problems

Difficulty level:

### QUESTION 1 of 10

In this worksheet you have to add together two two-digit numbers.

Example

28 + 57

First we add the units 8 + 7 = 15

Then we add the tens, 20 + 50 = 70

Then we combine the two results to get 15 70 = 85

31 + 45

31 + 31

31 + 77

21 + 36

31 + 29

47 + 45

38 + 15

28 + 45

35 + 45

37 + 75

• Question 1

31 + 45

76
EDDIE SAYS
Add the units to get: 1 + 5 = 6
Then add the tens to get: 30 + 40 = 70
Then combine the two results to get: 70 = 76
• Question 2

31 + 31

62
EDDIE SAYS
Add the units to get: 1 + 1 = 2
Then add the tens to get: 30 + 30 = 60
Then combine the two results to get: 2 + 60 = 62
• Question 3

31 + 77

108
EDDIE SAYS
Add the units to get: 1 + 7 = 8
Then add the tens to get: 30 + 70 = 100
Then combine the two results to get: 8 + 100 = 108
• Question 4

21 + 36

57
EDDIE SAYS
Add the units to get: 1 + 6 = 7
Then add the tens to get: 20 + 30 = 50
Then combine the two results to get: 7 + 50 = 57
• Question 5

31 + 29

60
EDDIE SAYS
Add the units to get: 1 + 9 = 10
Then add the tens to get: 30 + 20 = 50
Then combine the two results to get: 10 + 50 = 60
• Question 6

47 + 45

92
EDDIE SAYS
Add the units to get: 7 + 5 = 12
Then add the tens to get: 40 + 40 = 80
Then combine the two results to get: 12 + 80 = 92
• Question 7

38 + 15

53
EDDIE SAYS
Add the units to get: 8 + 5 = 13
Then add the tens to get: 30 + 10 = 40
Then combine the two results to get: 13 + 40 = 53
• Question 8

28 + 45

73
EDDIE SAYS
Add the units to get: 8 + 5 = 13
Then add the tens to get: 20 + 40 = 60
Then combine the two results to get: 13 + 60 = 73
• Question 9

35 + 45

80
EDDIE SAYS
Add the units to get: 5 + 5 = 10
Then add the tens to get: 30 + 40 = 70
Then combine the two results to get: 10 + 70 = 80
• Question 10

37 + 75

112
EDDIE SAYS
Add the units to get: 7 + 5 = 12
Then add the tens to get: 30 + 70 = 100
Then combine the two results to get: 12 + 100 = 112
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