问题 解答题

6.做一做:

(1)7.68÷0.5

(2)3.6÷1.25

(3)12.9÷(0.43×2)

(4)8.88÷1.25÷32.

答案

(1)7.68÷0.5

=(7.68×2)÷(0.5×2)

=15.36÷1

=15.36;

(2)3.6÷1.25

=(3.6×8)÷(1.25×8)

=28.8÷10

=2.88;

(3)12.9÷(0.43×2)

=12.9÷0.86

=15;

(4)8.88÷1.25÷32

=8.88÷(1.25×32)

=8.88÷(1.25×8×4)

=8.88÷40

=0.222.

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