Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 2 km 85 m = ______ cm
- 6 km 3 m = ______ m
- 2 km 473 m = _______ m
- 4 km 2 m 4 cm = _______ cm
(a)
1 km = 100000 cm
1 m = 100 cm
2 km 85 m
= 2 x 100000 + 85 x 100
= 200000 + 8500
= 208500 cm
(b)
1 km = 1000 m
6 km 3 m
= 6 x 1000 + 3
= 6000 + 3
= 6003 m
(c)
1 km = 1000 m
2 km 473 m
= 2 x 1000 + 473
= 2000 + 473
= 2473 m
(d)
1 km = 100000 cm
1 m = 100 cm
4 km 2 m 4 cm
= 4 x 100000 + 2 x 100 + 4
= 400000 + 200 + 4
= 400204 cm
Answer(s): 208500, 6003, 2473, 400204