speed-grid/addition-5x5/hard · 세트 3
2 problems
이름:
학급:
날짜:
1
4×4 addition speed grid. Row: [9, 5, 4, 1] × Col: [8, 5, 1, 9]
=
2
4×4 addition speed grid. Row: [1, 3, 5, 2] × Col: [2, 1, 8, 3]
=