Missing number problems — KS2 practice questions
Practise missing number problems — the reasoning skill of using the inverse operation to find an unknown value, such as 36 + ? = 80 or ? − 145 = 200. These appear throughout the KS2 SATs and build algebraic thinking. Every question is marked instantly with a worked explanation. No sign-up needed.
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Find the missing number: 36 + ? = 80
Find the missing number: ? − 145 = 200
Find the missing number: ? + 250 = 600
Find the missing number: 1000 − ? = 640
Find the missing number: ? × 6 = 48
Find the missing number: 420 + ? = 1000
Find the missing number: ? ÷ 4 = 9
Find the missing number: ? − 67 = 125
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Missing number problems — Frequently Asked Questions
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