KS1 Maths Quiz
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.

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1. Question 1

What is 57 - 19?
Subtracting 20 is easier, but means one needs to be added back on
2. Question 2

What is 68 - 24?
Again, partitioning numbers can prove useful
3. Question 3

What is 37 + 44?
Partitioning into tens and ones may be useful
4. Question 4

What is 56 - 37?
Imagining this calculation in two jumps of - 30 and then -7 might make it more manageable
5. Question 5

What is 33 + 33
Doubling the tens and doubling the units gives the same answer
6. Question 6

What is 44 + 23?
Partitioning the numbers into 40 + 20 and 4 + 3 is a useful strategy here
7. Question 7

What is 78 - 69?
Sometimes, counting up to find the difference is a good strategy when the numbers are quite close together
8. Question 8

What is 54 + 29?
Adding 30 to 54, and then taking away the extra 1 is a good strategy to use
9. Question 9

What is 32 + 48?
Recognising that 2 + 8 is a number bond which makes 10 might make things easier
10. Question 10

What is 98 - 12?
You could check the answer is correct by adding 86 and 12 to check it's 98

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