4年级 度量衡换算
Presentation
•
Mathematics
•
4th Grade
•
Hard
lim ssemiin
Used 3+ times
FREE Resource
11 Slides • 0 Questions
1
四年级
单元七 度量衡
2
长度的换算
1 cm = 10 mm
1 m = 100 cm
1 km = 1000 m
**大乘 小除
3
例子 ：
1. 2 cm = ___ mm
2 cm = ( 2 x 10 ) mm
= 20 mm
2. 10 cm = ___ mm
10 cm = ( 10 x 10 ) mm
= 100 mm
3. 600 cm = ___ mm
600 cm = ( 600 x 10 ) mm
= 6000 m
4. 15 cm = ___ mm
15 cm = ( 15 x 10 ) mm
= 150 cm
4
1. 50 m = ___ cm
50 m = ( 50 x 100 ) cm
= 5000 cm
2. 150 m = ___ cm
150 m = ( 150 x 100 ) cm
= 15000 cm
3. 77 m = ___ cm
77 m = ( 77 x 100 ) cm
= 7700 cm
4. 82 m = ___ cm
82 m = ( 82 x 100 ) cm
= 8200 cm
5
1. 8 km = ___ m
8 km = ( 8 x 1000 ) m
= 8000 m
2. 15 km = ___ m
15 km = ( 15 x 1000 ) m
= 15000 m
3. 25 km = ___ m
25 km = ( 25 x 1000 ) m
= 25000 m
4. 53 km = ___ m
53 km = ( 53 x 1000 ) m
= 53000 m
6
1. 50 mm = ___ cm
50 mm = (50mm ÷ 10mm) = 5 cm
2. 170 mm = ___ cm
170 mm = (170mm ÷ 10mm) = 17 cm
3. 200 mm = ___ cm
200 mm = (200 mm ÷ 10mm) = 20 cm
7
1. 3000 m = ___ km
3000 m = (3000m ÷ 1000m) = 3 km
2. 75000 m = ___ km
75000 m = (75000m ÷ 1000m) = 75 km
3. 7000 m = ___ km
7000 m = ( 7000m ÷ 1000m) = 7 km
8
1. 5 cm 9 mm = ____ mm
= (5 x 10) mm + 9 m
= 50 mm + 9 mm
= 59 mm
2. 17 cm 6 mm = ___ mm
= (17 x 10) mm + 6 mm
= 170 mm + 6 mm
= 176 mm
9
3. 9 km 250 m = ____ m
= (9 x 1000) m + 250 m
= 9000 m + 250 m
= 9250 m
4. 15km 750 m = ___ m
= (15 x 1000) m + 750 m
= 15000 m + 750 m
= 15750 m
10
5. 296 mm = ___ cm ____ mm
= (296 mm ÷ 10mm)
= 29 cm 6 mm
6. 956 mm = ___ cm ___ mm
= (956 mm ÷ 10mm)
= 95 cm 6 mm
11
5. 11565 m = ___ km ___ m
= (11565 m ÷ 1000 m)
= 11 km 565 m
6. 24383 m = ___ km ___ m
= (24383 m ÷ 1000 m)
= 24 km 383 m
四年级
单元七 度量衡
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