1.156×157.157-157×156.156
1个回答

1.156×157.157-157×156.156

=156 ×157×1.001-157×156×1.001

=0

2.(8.88+8.88+8.88+8.88)×1.25

=(1.11+1.11+1.11+1.11)×8×1.25

=4.44×10

=44.4

3.(6.4×7.5×8.1)÷(3.2×2.5×2.7)

= (6.4÷3.2)×(7.5÷2.5)×(8.1÷2.7)

=2×3×3

=18

4.20.86÷12.5+0.8÷12.5-9.16÷12.5

=(20.86+0.8-9.16)÷12.5

=12.5÷12.5

=1