Hard · Set 1
2 problems
Name:
Class:
Date:
1
4×4 addition speed grid. Row: [3, 9, 6, 5] × Col: [6, 9, 10, 4]
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2
4×4 addition speed grid. Row: [5, 4, 2, 6] × Col: [1, 4, 3, 5]
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