Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 9 km 31 m = ______ cm
- 3 km 6 m = ______ m
- 8 km 365 m = _______ m
- 2 km 7 m 2 cm = _______ cm
(a)
1 km = 100000 cm
1 m = 100 cm
9 km 31 m
= 9 x 100000 + 31 x 100
= 900000 + 3100
= 903100 cm
(b)
1 km = 1000 m
3 km 6 m
= 3 x 1000 + 6
= 3000 + 6
= 3006 m
(c)
1 km = 1000 m
8 km 365 m
= 8 x 1000 + 365
= 8000 + 365
= 8365 m
(d)
1 km = 100000 cm
1 m = 100 cm
2 km 7 m 2 cm
= 2 x 100000 + 7 x 100 + 2
= 200000 + 700 + 2
= 200702 cm
Answer(s): 903100, 3006, 8365, 200702