Question

1. 16 hm + 20 dam = .... m
2. 550 cm + 2.000 mm = .... dm
3. 20 km + 4 hm = .... dam
4. 4 hm + 50 dm = ... dm
5. 65 dam + 235 dm = ... cm
6. 10 hm + 25 dam = ... m
7. 5500 cm + 2.000 mm = ... dm
8. 2 km + 4 hm = ... dam
9. 45 hm + 5 dm = ... dm
10. 65 dam + 235 dm = ... cm

Answer 1

1. 16 hm + 20 dam = .... m
= 1600 m + 200 m = 1800 m

2. 550 cm + 2.000 mm = .... dm
= 255 dm + 20 dm = 275 dm

3. 20 km + 4 hm = .... dam
= 2.000 + 40 dam = 2.040 dam

4. 4 hm + 50 dm = .... dm
= 4.000 dm + 50 dm = 4.050 dm

5. 65 dam + 235 dm = .... cm
= 65.000 cm + 2.350 cm = 67.350 cm

6. 10 hm + 25 dam = .... m
= 1.000 m + 250 m = 1.250 m

7. 5.500 cm + 2.000 mm = .... dm
= 550 dm + 20 dm = 570 dm

8. 2 km + 4 hm = .... dam
= 200 dam + 40 dam = 240 dam

9. 45 hm + 5 dm = ... dm
= 45.000 dm + 5 dm = 45.005 dm

10. 65 dam + 235 dm = .... cm
= 65.000 cm + 2.350 cm = 67.350 cm

Answer 2

1. 16 hm = 16 × 100 = 1.600 m
    20 dam = 20 × 10 = 200 m
    1.600 m + 200 = 1.800 m
2. 550 cm = 550 ÷ 10 = 55 dm
    2.000 mm = 2.000 ÷ 100 = 20 dm
    55 dm + 20 dm = 75 dm
3. 20 km = 20 × 100 = 2.000 dam
    4 hm = 4 × 10 = 40 dam
    2.000 dam + 40 dam = 2.040 dam
4. 4 hm = 4 × 1000 = 4.000 dm
    50 dm = 50 dm
    4.000 dm + 50 dm = 4.050 dm
5. 65 dam = 65 × 1000= 65.000 cm
    235 dm = 235 ÷ 10 = 23,5 cm
    65.000 cm + 23,5 cm = 65.023,5 cm
6. 10 hm = 10 × 100 = 1000 m
    25 dam = 25 × 10 = 250 m
    1000 m + 250 m = 1.250 m
7. 5500 cm = 5500 ÷ 10 = 550 dm
    2.000 mm = 2.000 ÷ 100 = 20 dm
    550 dm + 20 dm = 570 dm
8. 2 km = 2 ×100 = 200 dam
    4 hm = 4 × 10 = 40 dam
    200 dam + 40 dam = 240 dam
9. 45 hm = 45 × 1000 = 45.000 dm
    5 dm = 5 dm
    45.000 dm + 5 dm = 45.005
10. 65 dam = 65 × 1000 = 65.000 cm
      235 dm = 235 × 10 = 2.350 cm
      65.000 cm + 2.350 cm = 67.350 cm