题目内容

【题目】直接写得数.

0.7×5= 0.54÷6= 0.01×3.5= 0.09×8×125=

17+2.04= 2.5×0.4= 4.2÷0.1= 1.2÷0.12×0.12=

【答案】3.5,0.09,0.035,90,19.04,1,42,1.2

【解析】

试题分析:0.09×8×125运用乘法结合律简算;

1.2÷0.12×0.12按照从左到右的顺序计算;

其它题目根据运算法则直接求解.

解:0.7×5=3.5, 0.54÷6=0.09, 0.01×3.5=0.035, 0.09×8×125=90,

17+2.04=19.04, 2.5×0.4=1, 4.2÷0.1=42, 1.2÷0.12×0.12=1.2.

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