 What number do you get if you take 30 away from 95?

# Year 2 Calculation - Addition and Subtraction of Two-Digit Numbers

This quiz addresses the requirements of the National Curriculum KS1 Maths and Numeracy for children aged 6 and 7 in year 2. Specifically this quiz is aimed at the section dealing with adding or subtracting two, two-digit numbers.

Adding and subtracting two-digit numbers from two-digit numbers is a progression from adding or subtracting one-digit numbers. This obviously requires a higher level of skill, and many children may rely on using number lines or 100 squares to assist them.

Question 1
What is 78 - 69?
11
10
9
12
Sometimes, counting up to find the difference is a good strategy when the numbers are quite close together
Question 2
What is 37 + 44?
81
78
80
87
Partitioning into tens and ones may be useful
Question 3
What is 33 + 33
58
56
68
66
Doubling the tens and doubling the units gives the same answer
Question 4
What is 56 - 37?
21
28
29
19
Imagining this calculation in two jumps of - 30 and then -7 might make it more manageable
Question 5
What is 98 - 12?
67
96
87
86
You could check the answer is correct by adding 86 and 12 to check it's 98
Question 6
What is 57 - 19?
39
38
47
50
Subtracting 20 is easier, but means one needs to be added back on
Question 7
What is 32 + 48?
70
80
90
60
Recognising that 2 + 8 is a number bond which makes 10 might make things easier
Question 8
What is 68 - 24?
44
54
42
48
Again, partitioning numbers can prove useful
Question 9
What is 44 + 23?
73
57
67
87
Partitioning the numbers into 40 + 20 and 4 + 3 is a useful strategy here
Question 10
What is 54 + 29?
88
84
83
38
Adding 30 to 54, and then taking away the extra 1 is a good strategy to use 