11.李爷爷家6头猪一星期共吃饲料285.6 kg,平均每头猪每天吃多少千克?
答案
一星期有7天
285.6 ÷ 6 ÷ 7
= 47.6 ÷ 7
= 6.8(千克)
答:平均每头猪每天吃6.8千克。
285.6 ÷ 6 ÷ 7
= 47.6 ÷ 7
= 6.8(千克)
答:平均每头猪每天吃6.8千克。
1. 把下面的算式转化成除数是整数的除法算式。
0.36÷0.04=()÷4
5.98÷0.23=()÷()
12.6÷0.18=()÷18
97.2÷0.43=()÷()
1.25÷0.5=()÷5
36÷0.25=()÷()
0.36÷0.04=()÷4
5.98÷0.23=()÷()
12.6÷0.18=()÷18
97.2÷0.43=()÷()
1.25÷0.5=()÷5
36÷0.25=()÷()
答案
0.36÷0.04=36÷4
5.98÷0.23=598÷23
12.6÷0.18=1260÷18
97.2÷0.43=9720÷43
1.25÷0.5=12.5÷5
36÷0.25=3600÷25
5.98÷0.23=598÷23
12.6÷0.18=1260÷18
97.2÷0.43=9720÷43
1.25÷0.5=12.5÷5
36÷0.25=3600÷25
2.直接写得数。
8.4÷0.7=
7.2÷0.08=
8÷1.6=
0.3÷0.15=
36÷0.12=
1.2÷0.4=
8.5÷1.7=
0÷3.78=
12.3÷0.03=
0.95÷0.95=
16÷0.4=
4.8÷0.12=
8.4÷0.7=
7.2÷0.08=
8÷1.6=
0.3÷0.15=
36÷0.12=
1.2÷0.4=
8.5÷1.7=
0÷3.78=
12.3÷0.03=
0.95÷0.95=
16÷0.4=
4.8÷0.12=
答案
8.4÷0.7=12
7.2÷0.08=90
8÷1.6=5
0.3÷0.15=2
36÷0.12=300
1.2÷0.4=3
8.5÷1.7=5
0÷3.78=0
12.3÷0.03=410
0.95÷0.95=1
16÷0.4=40
4.8÷0.12=40
7.2÷0.08=90
8÷1.6=5
0.3÷0.15=2
36÷0.12=300
1.2÷0.4=3
8.5÷1.7=5
0÷3.78=0
12.3÷0.03=410
0.95÷0.95=1
16÷0.4=40
4.8÷0.12=40
3.列竖式计算。
49.5÷1.5
3.84÷2.4
10.92÷4.2
0.21÷0.025
9÷0.45
6.3÷0.42
49.5÷1.5
3.84÷2.4
10.92÷4.2
0.21÷0.025
9÷0.45
6.3÷0.42
答案
49.5÷1.5
将除数1.5扩大10倍变为整数15,被除数49.5同时扩大10倍变为495:
```
33
15)495
45
---
45
45
---
0
```
$49.5÷1.5=33$
---
3.84÷2.4
将除数2.4扩大10倍变为整数24,被除数3.84同时扩大10倍变为38.4:
```
1.6
24)38.4
24
---
144
144
---
0
```
$3.84÷2.4=1.6$
---
10.92÷4.2
将除数4.2扩大10倍变为整数42,被除数10.92同时扩大10倍变为109.2:
```
2.6
42)109.2
84
---
252
252
---
0
```
$10.92÷4.2=2.6$
---
0.21÷0.025
将除数0.025扩大1000倍变为整数25,被除数0.21同时扩大1000倍变为210:
```
8.4
25)210.0
200
---
100
100
---
0
```
$0.21÷0.025=8.4$
---
9÷0.45
将除数0.45扩大100倍变为整数45,被除数9同时扩大100倍变为900:
```
20
45)900
90
---
00
```
$9÷0.45=20$
---
6.3÷0.42
将除数0.42扩大100倍变为整数42,被除数6.3同时扩大100倍变为630:
```
15
42)630
42
---
210
210
---
0
```
$6.3÷0.42=15$
将除数1.5扩大10倍变为整数15,被除数49.5同时扩大10倍变为495:
```
33
15)495
45
---
45
45
---
0
```
$49.5÷1.5=33$
---
3.84÷2.4
将除数2.4扩大10倍变为整数24,被除数3.84同时扩大10倍变为38.4:
```
1.6
24)38.4
24
---
144
144
---
0
```
$3.84÷2.4=1.6$
---
10.92÷4.2
将除数4.2扩大10倍变为整数42,被除数10.92同时扩大10倍变为109.2:
```
2.6
42)109.2
84
---
252
252
---
0
```
$10.92÷4.2=2.6$
---
0.21÷0.025
将除数0.025扩大1000倍变为整数25,被除数0.21同时扩大1000倍变为210:
```
8.4
25)210.0
200
---
100
100
---
0
```
$0.21÷0.025=8.4$
---
9÷0.45
将除数0.45扩大100倍变为整数45,被除数9同时扩大100倍变为900:
```
20
45)900
90
---
00
```
$9÷0.45=20$
---
6.3÷0.42
将除数0.42扩大100倍变为整数42,被除数6.3同时扩大100倍变为630:
```
15
42)630
42
---
210
210
---
0
```
$6.3÷0.42=15$
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