Question

4．直接寫(xiě)出得數(shù)．

0.8+4.7=	1-0.05=	2.3+0.8=	30-30÷5=
0.6-0.38=	5.6÷10=	8×5÷2=	1.2-0.8-0.2=
0.75×100=	1.5+0.78=	25×8=	3.6+0.75+0.4=

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1.2-0.8-0.2根據(jù)減法的性質(zhì)，3.6+0.75+0.4變形為3.6+0.4+0.75計(jì)算．

解答 解：

0.8+4.7=5.5	1-0.05=0.95	2.3+0.8=3.1	30-30÷5=24
0.6-0.38=0.22	5.6÷10=0.56	8×5÷2=20	1.2-0.8-0.2=0.2
0.75×100=75	1.5+0.78=2.28	25×8=200	3.6+0.75+0.4=4.75

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．