Question

脱式计算：2.3+3.91÷（22-19.7） 1.25x88 0.8x0.4x0.125x25 100.7-（75+9

Answer 1

2.3+3.91÷(22-19.7)

=2.3+3.91÷2.3

=2.3+1.7

=4

1.25×88

=5/4×88

=110

0.8×0.4×0.125×25

=(0.8×0.125)×(0.4×25)

=0.1×10

=1

100.7-(75+9.6÷0.4)

=100.7-(75+24)

=100.7-99

=1.7