Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 6 km 84 m = ______ cm
- 3 km 6 m = ______ m
- 5 km 249 m = _______ m
- 2 km 5 m 4 cm = _______ cm
(a)
1 km = 100000 cm
1 m = 100 cm
6 km 84 m
= 6 x 100000 + 84 x 100
= 600000 + 8400
= 608400 cm
(b)
1 km = 1000 m
3 km 6 m
= 3 x 1000 + 6
= 3000 + 6
= 3006 m
(c)
1 km = 1000 m
5 km 249 m
= 5 x 1000 + 249
= 5000 + 249
= 5249 m
(d)
1 km = 100000 cm
1 m = 100 cm
2 km 5 m 4 cm
= 2 x 100000 + 5 x 100 + 4
= 200000 + 500 + 4
= 200504 cm
Answer(s): 608400, 3006, 5249, 200504