Question

3.87除以4.3乘以（1.2+0.3）要求简算 怎么算?

Answer 1

3.87÷4.3×(1.2+0.3)

=(4.3-0.43)÷4.3×(1.2+0.3)

=(4.3÷4.3-0.43÷4.3)×(1.2+0.3)

=(1-0.1)×1.5

=1.5-0.15

=1.35