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In this worksheet, students add together a two-digit and a one-digit number.

Key stage:  KS 1

Curriculum topic:   Number: Addition and Subtraction

Curriculum subtopic:   Solve Add/Subtract Problems to 100

Difficulty level:

### QUESTION 1 of 10

Can you add together the number of packets of cakes (there are ten in each packet) with the number of loose cakes?

Example:

Three packets of ten cakes and nine loose cakes?

 39 = 30 + 9

Three packets of ten cakes and one loose cake?

 31 = 30 + ?

Work out the sum and then write the missing number in the box below.

 32 = 30 + ?

Work out the sum and then write the missing number in the box below.

 33 = 30 + ?

Work out the sum and then write the missing number in the box below.

 31 = ? + 1

Work out the sum and then write the missing number in the box below.

 39 = ? + 9

Work out the sum and then write the missing number in the box below.

 37 = 30 + ?

Work out the sum and then write the missing number in the box below.

 35 = 30 + ?

Work out the sum and then write the missing number in the box below.

 35 = ? + 5

Work out the sum and then write the missing number in the box below.

 36 = 30 + ?

Work out the sum and then write the missing number in the box below.

 39 = 30 + ?

• Question 1

Three packets of ten cakes and one loose cake?

 31 = 30 + ?

1
EDDIE SAYS
3 packets of 10 cakes = 30 cakes plus 1 extra cake is 31.
• Question 2

Work out the sum and then write the missing number in the box below.

 32 = 30 + ?

2
EDDIE SAYS
3 packets of 10 cakes = 30 cakes plus 2 extra cakes is 32.
• Question 3

Work out the sum and then write the missing number in the box below.

 33 = 30 + ?

3
EDDIE SAYS
3 packets of 10 cakes = 30 cakes plus 3 extra cakes is 33.
• Question 4

Work out the sum and then write the missing number in the box below.

 31 = ? + 1

30
EDDIE SAYS
3 packets of 10 cakes = 30 cakes plus 1 extra cake is 31.
• Question 5

Work out the sum and then write the missing number in the box below.

 39 = ? + 9

30
EDDIE SAYS
3 packets of 10 cakes = 30 cakes plus 9 extra cakes is 39.
• Question 6

Work out the sum and then write the missing number in the box below.

 37 = 30 + ?

7
EDDIE SAYS
3 packets of 10 cakes = 30 cakes plus 7 extra cakes is 37.
• Question 7

Work out the sum and then write the missing number in the box below.

 35 = 30 + ?

5
EDDIE SAYS
3 packets of 10 cakes = 30 cakes plus 5 extra cakes is 35.
• Question 8

Work out the sum and then write the missing number in the box below.

 35 = ? + 5

30
EDDIE SAYS
3 packets of 10 cakes = 30 cakes plus 5 extra cakes is 35.
• Question 9

Work out the sum and then write the missing number in the box below.

 36 = 30 + ?

6
EDDIE SAYS
3 packets of 10 cakes = 30 cakes plus 6 extra cakes is 36.
• Question 10

Work out the sum and then write the missing number in the box below.

 39 = 30 + ?

9
EDDIE SAYS
3 packets of 10 cakes = 30 cakes plus 9 extra cakes is 39.
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