Question

能简算的要用简便方法计算 7.6×5.3+3.7×7.6 （3.7+17×0...

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）

Answer 1

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