Exercise
Regrouping Challenge: Finding Missing Addends
Challenge yourself to find missing addends in two-digit addition problems with regrouping. Work backwards to determine the correct unknown value.
Questions
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MultiChoice
27 + ? = 61
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MultiChoice
38 + ? = 73
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MultiChoice
49 + ? = 82
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MultiChoice
15 + ? = 52
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MultiChoice
26 + ? = 64
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MultiChoice
57 + ? = 91
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MultiChoice
? + 28 = 65
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MultiChoice
? + 19 = 53
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MultiChoice
? + 36 = 72
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MultiChoice
? + 45 = 81
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MultiChoice
29 + ? = 75
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MultiChoice
? + 37 = 90