Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 2 km 92 m = ______ cm
- 6 km 2 m = ______ m
- 5 km 879 m = _______ m
- 6 km 7 m 2 cm = _______ cm
(a)
1 km = 100000 cm
1 m = 100 cm
2 km 92 m
= 2 x 100000 + 92 x 100
= 200000 + 9200
= 209200 cm
(b)
1 km = 1000 m
6 km 2 m
= 6 x 1000 + 2
= 6000 + 2
= 6002 m
(c)
1 km = 1000 m
5 km 879 m
= 5 x 1000 + 879
= 5000 + 879
= 5879 m
(d)
1 km = 100000 cm
1 m = 100 cm
6 km 7 m 2 cm
= 6 x 100000 + 7 x 100 + 2
= 600000 + 700 + 2
= 600702 cm
Answer(s): 209200, 6002, 5879, 600702