Question

7．直接寫得數(shù)．

1÷20%=	1.82+2.8=	0.625×$\frac{8}{5}$=	6.3+3.17-6.3+3.17=
0.45×101=	9991-1999=	1÷1.25×0.8=	10-1.88=

Answer 1

分析 根據(jù)整數(shù)加法、分?jǐn)?shù)除法、小數(shù)加法、小數(shù)乘法、小數(shù)除法的計(jì)算法則，依次進(jìn)行解答即可．

解答 解：

1÷20%=5	1.82+2.8=4.62	0.625×$\frac{8}{5}$=1	6.3+3.17-6.3+3.17=6.34
0.45×101=45.45	9991-1999=7992	1÷1.25×0.8=0.64	10-1.88=8.12

點(diǎn)評(píng) 明確整數(shù)加法、分?jǐn)?shù)除法、小數(shù)加法、小數(shù)乘法、小數(shù)除法的計(jì)算法則，是解答此題的關(guān)鍵．