speed-grid/addition-5x5/easy · 套题 10
2 problems
姓名:
班级:
日期:
1
4×4 addition speed grid. Row: [10, 9, 2, 3] × Col: [2, 1, 9, 8]
=
2
4×4 addition speed grid. Row: [4, 1, 9, 8] × Col: [3, 4, 6, 1]
=