Question

16．直接寫出得數(shù)．

0.36×5=	16×0.01=	1.78÷0.3=	2.7÷0.03=	0.03÷0.3=
1.8×20=	3.2÷0.1=	0.2×0.2=	2.5×9.3×4=	0.99+0.01÷10=
0.7×0.79+0.7=

Answer 1

分析 根據(jù)小數(shù)加減乘除法的計(jì)算方法解答，2.5×9.3×4根據(jù)乘法交換律和結(jié)合律進(jìn)行簡算，0.7×0.79+0.7根據(jù)乘法分配律進(jìn)行簡算，多步計(jì)算的注意運(yùn)算順序．

解答 解：

0.36×5=1.8	16×0.01=0.16	1.78÷0.3=$\frac{89}{15}$	2.7÷0.03=90	0.03÷0.3=0.1
1.8×20=36	3.2÷0.1=32	0.2×0.2=0.04	2.5×9.3×4=93	0.99+0.01÷10=0.991
0.7×0.79+0.7=1.253

點(diǎn)評 直接寫得數(shù)時(shí)，注意數(shù)據(jù)特點(diǎn)和運(yùn)算符號，多步計(jì)算的注意驗(yàn)算順序，能用運(yùn)算定律進(jìn)行簡算的要簡算．