Question

计算（能简算的简算，写出必要的过程）9.07-22.78÷3.4 &nb...

计算（能简算的简算，写出必要的过程）9.07-22.78÷3.4 32÷0.25÷0.49.3÷0.125÷8 75.6÷13.5-（3.6+1.78）2.3+3.91÷（22-19.7）18-（1.4+1.25×2.4）[15.2+（8.4-4.5×0.8）]÷1.6 6.75÷[0.9÷（0.3×0.4）]

Answer 1

①9.07-22.78÷3.4 
=9.07-6.7
=2.37

②32÷0.25÷0.4
=32÷（0.25×0.4）
=32÷0.1
=320

③9.3÷0.125÷8
=9.3÷（0.125×8）
=9.3÷1
=9.3

④75.6÷13.5-（3.6+1.78）
=5.6-5.38
=0.22

⑤2.3+3.91÷（22-19.7）
=2.3+3.91÷2.3
=2.3+1.7
=4

⑥18-（1.4+1.25×2.4）
=18-（1.4+3）
=18-4.4
=13.6

⑦[15.2+（8.4-4.5×0.8）]÷1.6 
=[15.2+（8.4-3.6）]÷1.6
=[15.2+4.8]÷1.6
=20÷1.6
=12.5

⑧6.75÷[0.9÷（0.3×0.4）]
=6.75÷[0.9÷0.12]
=6.75÷7.5
=0.9