Question

calculează:
3m + 20m= ? cm
7m + 400cm = ? m
3m + 2000mm = ? mm
5000m + 7km = ? cm
980hm + 78000m = ? km
8m - 2450mm = ? cm
70km - 45000m = ? m
500cm - 2m = ? cm
8m - 155cm = ? cm
900cm - 370mm = ? mm
8×35hm = ? km
900mm : 5 = ? cm
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Answer 1

3m + 20m= 300 cm + 2000 cm = 2300 cm

1 m = 10 dm = 100 cm

3m x 100 = 300 cm

20 m x 100 = 2000 cm

7m + 400cm = 7 m + 4 m = 11 m

1 m = 100 cm

400 cm : 100 = 4 m

3m + 2000mm = 3000 mm + 2000 mm = 5000 mm

1 m = 10 dm = 100 cm = 1000 mm

3 m x 1000 = 3000 mm

5000m + 7km = 500000 cm + 700000 cm = 1200000 cm

1 m = 10 dm = 100 cm

5000 m x 100 = 500000 cm

1 km = 10 hm = 100 dam = 1000 m = 10000 dm = 100000 cm

7 km x 100000 = 700000 cm

980hm + 78000m = 98 km + 78 km = 176 km

1 km = 10 hm

980 hm : 10 = 98 km

1 km = 10 hm = 100 dam = 1000 m

78000 m : 1000 = 78 km

8m - 2450mm = 800 cm - 245 cm = 555 cm

1 m = 10 dm = 100 cm

8 m x 100 = 800 cm

1 cm = 10 mm

2450 mm : 10 = 245 cm

70km - 45000m = 70000m - 45000 m = 25000 m

1 km = 10 hm = 100 dam = 1000 m

70 km x 1000 = 70000 m

500cm - 2m = 500 cm - 200 cm = 300 cm

1 m = 10 dm = 100 cm

2 m x 100 = 200 cm

8m - 155cm = 800 cm - 155 cm = 645 cm

1 m = 10 dm = 100 cm

8 m x 100 = 800 cm

900cm - 370mm = 9000mm - 370 mm = 8630 mm

1 cm = 10 mm

900 cm x 10 = 9000 mm

8×35hm = 8 x 3,5 km = 28 km

1 km = 10 hm

35 hm : 10 = 3,5 km

900mm : 5 = 90 cm : 5 = 18 cm

1 cm = 10 mm

900 mm : 10 = 90 cm