问题 解答题

口算.

1.5×4=______;

2.6×0.2=______;

6.4+0.08=______;

3.5+7.6=______;

0.12×3=______;

1-0.125=______;

0.4÷0.5=______;

8.1-0.03=______;

4.2×0.1=______;

0.25÷10=______.

答案

1.5×4=6;

2.6×0.2=0.52;

6.4+0.08=6.48;

3.5+7.6=11.1;

0.12×3=0.36;

1-0.125=0.875;

0.4÷0.5=0.8;

8.1-0.03=8.07;

4.2×0.1=0.42;

0.25÷10=0.025.

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