Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 5 km 32 m = ______ cm
- 2 km 5 m = ______ m
- 6 km 509 m = _______ m
- 4 km 2 m 3 cm = _______ cm
(a)
1 km = 100000 cm
1 m = 100 cm
5 km 32 m
= 5 x 100000 + 32 x 100
= 500000 + 3200
= 503200 cm
(b)
1 km = 1000 m
2 km 5 m
= 2 x 1000 + 5
= 2000 + 5
= 2005 m
(c)
1 km = 1000 m
6 km 509 m
= 6 x 1000 + 509
= 6000 + 509
= 6509 m
(d)
1 km = 100000 cm
1 m = 100 cm
4 km 2 m 3 cm
= 4 x 100000 + 2 x 100 + 3
= 400000 + 200 + 3
= 400203 cm
Answer(s): 503200, 2005, 6509, 400203