一、直接写出得数。(共32分)
2.5×100=
0.99÷0.11=
2.4×0.3=
0.16÷0.08÷0.04=
0.14×3=
3.6÷1.8=
3.2÷0.16=
0.7×0.9×2=
45÷0.5=
2.1×0.3=
9÷0.03=
1.5÷0.03÷0.1=
3.2×0.3=
1.2×0.8=
4.9×0.1=
7.6×0.5×2=
0.25×3=
3.5÷5=
4.5÷90=
0.1×0.3×0.2=
0.2×0.09=
4.5÷1.5=
0.14×0.5=
0.2÷0.4÷0.1=
12.3÷100=
0.9÷0.9=
0.35×0.2=
4.5÷0.3÷1.5=
1÷0.5=
0.32×0.2=
1.8÷0.02=
3.65×10×0=
2.5×100=
0.99÷0.11=
2.4×0.3=
0.16÷0.08÷0.04=
0.14×3=
3.6÷1.8=
3.2÷0.16=
0.7×0.9×2=
45÷0.5=
2.1×0.3=
9÷0.03=
1.5÷0.03÷0.1=
3.2×0.3=
1.2×0.8=
4.9×0.1=
7.6×0.5×2=
0.25×3=
3.5÷5=
4.5÷90=
0.1×0.3×0.2=
0.2×0.09=
4.5÷1.5=
0.14×0.5=
0.2÷0.4÷0.1=
12.3÷100=
0.9÷0.9=
0.35×0.2=
4.5÷0.3÷1.5=
1÷0.5=
0.32×0.2=
1.8÷0.02=
3.65×10×0=
答案
250
9
0.72
50
0.42
2
20
1.26
90
0.63
300
500
0.96
0.96
0.49
7.6
0.75
0.7
0.05
0.006
0.018
3
0.07
5
0.123
1
0.07
10
2
0.064
90
0
9
0.72
50
0.42
2
20
1.26
90
0.63
300
500
0.96
0.96
0.49
7.6
0.75
0.7
0.05
0.006
0.018
3
0.07
5
0.123
1
0.07
10
2
0.064
90
0
二、用竖式计算,带☆的要验算。(共21分)
4.08×3.5= ☆0.67×3.8= ☆48.36÷6.2=
15.08÷5.6≈
(得数保留两位小数)
☆23.8×5.4= 12.2÷0.45≈
(得数保留一位小数)
4.08×3.5= ☆0.67×3.8= ☆48.36÷6.2=
15.08÷5.6≈
(得数保留两位小数)
☆23.8×5.4= 12.2÷0.45≈
(得数保留一位小数)
答案
14.28
2.546
7.8
2.69
128.52
27.1
竖式及验算略
2.546
7.8
2.69
128.52
27.1
竖式及验算略
三、计算下面各题。(共18分)
17.83−9.5+3.77
12.54−7.8+5.28
13.35−4.68+0.56
3.757−0.75+1.86
9.28+3.76+18.3
3.02−2.088+8.18
17.83−9.5+3.77
12.54−7.8+5.28
13.35−4.68+0.56
3.757−0.75+1.86
9.28+3.76+18.3
3.02−2.088+8.18
答案
12.1
10.02
9.23
4.867
31.34
9.112
10.02
9.23
4.867
31.34
9.112
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