Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 4 km 40 m = ______ cm
- 3 km 7 m = ______ m
- 9 km 906 m = _______ m
- 5 km 3 m 5 cm = _______ cm
(a)
1 km = 100000 cm
1 m = 100 cm
4 km 40 m
= 4 x 100000 + 40 x 100
= 400000 + 4000
= 404000 cm
(b)
1 km = 1000 m
3 km 7 m
= 3 x 1000 + 7
= 3000 + 7
= 3007 m
(c)
1 km = 1000 m
9 km 906 m
= 9 x 1000 + 906
= 9000 + 906
= 9906 m
(d)
1 km = 100000 cm
1 m = 100 cm
5 km 3 m 5 cm
= 5 x 100000 + 3 x 100 + 5
= 500000 + 300 + 5
= 500305 cm
Answer(s): 404000, 3007, 9906, 500305