Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 6 km 70 m = ______ cm
- 2 km 5 m = ______ m
- 8 km 268 m = _______ m
- 7 km 8 m 9 cm = _______ cm
(a)
1 km = 100000 cm
1 m = 100 cm
6 km 70 m
= 6 x 100000 + 70 x 100
= 600000 + 7000
= 607000 cm
(b)
1 km = 1000 m
2 km 5 m
= 2 x 1000 + 5
= 2000 + 5
= 2005 m
(c)
1 km = 1000 m
8 km 268 m
= 8 x 1000 + 268
= 8000 + 268
= 8268 m
(d)
1 km = 100000 cm
1 m = 100 cm
7 km 8 m 9 cm
= 7 x 100000 + 8 x 100 + 9
= 700000 + 800 + 9
= 700809 cm
Answer(s): 607000, 2005, 8268, 700809