2025年亮点给力计算天天练五年级数学上册苏教版第69页答案
1. 直接写出得数。
8-0.6=
7.4

9.7-6.9=
2.8

2.8×0.2=
0.56

4.05+0.32-1.1=
3.27

7.2-0.7=
6.5

0.5×1.5=
0.75

1.6×0.9=
1.44

2.75+6.8-1.9=
7.65

9.3÷3.1=
3

0.21÷7=
0.03

1.9×100=
190

2.4×0.4÷2=
0.48

2.4×0.4=
0.96

0.25×8=
2

4.2×0.8=
3.36

1.48÷0.2-2.5=
4.9

3.5×0.3=
1.05

2.3×0.5=
1.15

4.24÷0.8=
5.3

3.2×0.9÷0.3=
9.6

7.2÷0.6=
12

0.84÷0.4=
2.1

3.2×0.9=
2.88

9.1÷70×100=
13

0.04+0.72=
0.76

6.6÷0.6=
11

1.27×0.3=
0.381

8.5÷1.7÷5=
1

1.2÷0.06=
20

2.7÷0.1=
27

0.6÷1.5=
0.4

1.1÷2.2×1.1÷2.2=
0.25

答案

7.4 2.8 0.56 3.27
6.5 0.75 1.44 7.65
3 0.03 190 0.48
0.96 2 3.36 4.9
1.05 1.15 5.3 9.6
12 2.1 2.88 13
0.76 11 0.381 1
20 27 0.4 0.25
2. 计算下面各题,能简算的要简算。
0.25×32×1.25
13.95×11-13.95
3.96+12.87+6.04-2.87
19.9×0.01+8.01×0.1
(4.9-1.3)÷2.5÷0.4
3.75×0.5+6.25÷2

答案

10 139.5 20 1 3.6 5

解析

0.25×32×1.25
=0.25×4×8×1.25
=(0.25×4)×(8×1.25)
=1×10
=10
13.95×11-13.95
=13.95×(11-1)
=13.95×10
=139.5
3.96+12.87+6.04-2.87
=(3.96+6.04)+(12.87-2.87)
=10+10
=20
19.9×0.01+8.01×0.1
=0.199+0.801
=1
(4.9-1.3)÷2.5÷0.4
=3.6÷(2.5×0.4)
=3.6÷1
=3.6
3.75×0.5+6.25÷2
=3.75×0.5+6.25×0.5
=(3.75+6.25)×0.5
=10×0.5
=5
巧算:0.0792×2500+792×0.24+51×7.92。

答案

原式=792×0.25+792×0.24+
792×0.51
=792×（0.25+0.24+
0.51）
=792