脱式计算．6.8×0.75÷0

Question

脱式计算．6.8×0.75÷0.50.94÷1.25÷0.80.5×4÷0.5×429.4÷7+3.6（7.5-2.3×0.4）÷0.019÷[0.3×（8-6.5）]．

Answer 1

（1）6.8×0.75÷0.5
=5.1÷0.5
=10.2

（2）0.94÷1.25÷0.8
=0.94÷（1.25×0.8）
=0.94÷1
=0.94

（3）0.5×4÷0.5×4
=（0.5÷0.5）×（4×4）
=1×16
=16

（4）29.4÷7+3.6
=4.2+3.6
=7.8

（5）（7.5-2.3×0.4）÷0.01
=（7.5-0.92）÷0.01
=6.58÷0.01
=658

（6）9÷[0.3×（8-6.5）]
=9÷[0.3×1.5]
=9÷0.45
=20