能简算的要用简便方法计算 7.6×5.3+3.7×7.6 &n
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能简算的要用简便方法计算
7.6×5.3+3.7×7.6 | (3.7+17×0.4)÷3.5 | 75.36÷12-4.32×0.5 |
8.8×0.125 | 24.1×1.5+7.59×15 | 6.6÷(0.68+0.42) |
①7.6×5.3+3.7×7.6
=7.6×(5.3+3.7)
=7.6×9
=68.4
②(3.7+17×0.4)÷3.5
=(3.7+6.8)÷3.5
=10.5÷3.5
=3
③75.36÷12-4.32×0.5
=6.28-2.16
=4.12
④8.8×0.125
=1.1×8×0.125
=1.1×1
=1.1
⑤24.1×1.5+7.59×15
=2.41×15+7.59×15
=15×(2.41+7.59)
=15×10
=150
⑥6.6÷(0.68+0.42)
=6.6÷1.1
=6
=7.6×(5.3+3.7)
=7.6×9
=68.4
②(3.7+17×0.4)÷3.5
=(3.7+6.8)÷3.5
=10.5÷3.5
=3
③75.36÷12-4.32×0.5
=6.28-2.16
=4.12
④8.8×0.125
=1.1×8×0.125
=1.1×1
=1.1
⑤24.1×1.5+7.59×15
=2.41×15+7.59×15
=15×(2.41+7.59)
=15×10
=150
⑥6.6÷(0.68+0.42)
=6.6÷1.1
=6