能简算的要用简便方法计算24.1×1.5+7.59×15(3.7+17×0.4)÷3.575.36÷12-4.32×0.58.8×0.125 7.6×5
能简算的要用简便方法计算24.1×1.5+7.59×15(3.7+17×0.4)÷3.575.36÷12-4.32×0.58.8×0.1257.6×5.3+3.7×7.6...
能简算的要用简便方法计算24.1×1.5+7.59×15(3.7+17×0.4)÷3.575.36÷12-4.32×0.58.8×0.125 7.6×5.3+3.7×7.66.6÷(0.68+0.42)
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①24.1×1.5+7.59×15, =2.41×15+7.59×15, =(2.41+7.59)×15, =10×15, =150; 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, =(8+0.8)×0.125, =8×0.125+0.8×0.125, =1+0.1, =1.1; ⑤7.6×5.3+3.7×7.6, =(5.3+3.7)×7.6, =9×7.6, =68.4; ⑥6.6÷(0.68+0.42), =6.6÷1.1, =6. |
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