speed-grid/addition-4x4/medium · 세트 1
2 problems
이름:
학급:
날짜:
1
4×4 addition speed grid. Row: [10, 4, 5, 9] × Col: [1, 8, 2, 6]
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2
4×4 addition speed grid. Row: [8, 4, 7, 10] × Col: [2, 5, 9, 8]
=