Question

18．直接寫得數(shù)．

0.16×5=	0.5×0.06=	4.2×0.3=	70×0.5=
0.9×0.6=	0×3.5=	1-0.3=	0.12×100÷12=
0.3+0.81=	66÷0.6=	0.25×0.2=	18.4-3.6-5.4=

Answer 1

分析 根據(jù)小數(shù)加減乘除法運(yùn)算的計(jì)算法則計(jì)算即可求解．注意18.4-3.6-5.4根據(jù)減法的性質(zhì)計(jì)算．

解答 解：

0.16×5=0.8	0.5×0.06=0.03	4.2×0.3=1.26	70×0.5=35
0.9×0.6=0.54	0×3.5=0	1-0.3=0.7	0.12×100÷12=1
0.3+0.81=1.11	66÷0.6=110	0.25×0.2=0.05	18.4-3.6-5.4=9.4

點(diǎn)評(píng) 考查了小數(shù)加減乘除法運(yùn)算，關(guān)鍵是熟練掌握計(jì)算法則正確進(jìn)行計(jì)算．