Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 5 km 22 m = ______ cm
- 6 km 8 m = ______ m
- 4 km 150 m = _______ m
- 7 km 8 m 5 cm = _______ cm
(a)
1 km = 100000 cm
1 m = 100 cm
5 km 22 m
= 5 x 100000 + 22 x 100
= 500000 + 2200
= 502200 cm
(b)
1 km = 1000 m
6 km 8 m
= 6 x 1000 + 8
= 6000 + 8
= 6008 m
(c)
1 km = 1000 m
4 km 150 m
= 4 x 1000 + 150
= 4000 + 150
= 4150 m
(d)
1 km = 100000 cm
1 m = 100 cm
7 km 8 m 5 cm
= 7 x 100000 + 8 x 100 + 5
= 700000 + 800 + 5
= 700805 cm
Answer(s): 502200, 6008, 4150, 700805