Question

53.2+小括号,0.63+。0.37-42.2的脱式计算。

脱式计算．（能简算的要简算） 7.6×2.4-0.04 32×12.5×2.5 3.572÷0.47×28 8.25×0.63+0.37×8.25 6.21÷0.69÷0.45 47.04÷0.14+21.3．

Answer 1

（1）7.6×2.4-0.04
=18.24-0.04
=18.2

（2）32×12.5×2.5
=8×4×12.5×2.5
=（8×12.5）×（2.5×4）
=100×10
=1000

（3）3.572÷0.47×28
=7.6×28
=212.8

（4）8.25×0.63+0.37×8.25
=8.25×（0.63+0.37）
=8.25×1
=8.25

（5）6.21÷0.69÷0.45
=9÷0.45
=20

（6）47.04÷0.14+21.3
=336+21.3
=357.3