KS1 Maths

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Addition and Subtraction

Help Molly get out of the pyramid by filling in the missing numbers in these sums.

21 + 9 = ......... 80 + ......... = 100

10 + 90 = ......... 480 + ......... = 600

860 - ......... = 790

......... + 15 = 45 ......... - 600 = 400

......... - 450 = 450

320 - 50 = .........