口算 2×5= |
5×4= |
3×7= |
9×1= |
8×4= |
2×8= |
6×5= |
5×9= |
6×3= |
2×7= |
7×5= |
4×4= |
9×8= |
6×7= |
分析:根據表內乘法口訣來進行解答即可.
解答:解:
2×5=10 |
5×4=20 |
3×7=21 |
9×1=9 |
8×4=32 |
2×8=16 |
6×5=30 |
5×9=45 |
6×3=18 |
2×7=14 |
7×5=35 |
4×4=16 |
9×8=72 |
6×7=42 |
點評:熟練掌握表內乘法口訣是解答此題的關鍵.
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