Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 4 km 56 m = ______ cm
- 3 km 8 m = ______ m
- 9 km 314 m = _______ m
- 3 km 5 m 2 cm = _______ cm
(a)
1 km = 100000 cm
1 m = 100 cm
4 km 56 m
= 4 x 100000 + 56 x 100
= 400000 + 5600
= 405600 cm
(b)
1 km = 1000 m
3 km 8 m
= 3 x 1000 + 8
= 3000 + 8
= 3008 m
(c)
1 km = 1000 m
9 km 314 m
= 9 x 1000 + 314
= 9000 + 314
= 9314 m
(d)
1 km = 100000 cm
1 m = 100 cm
3 km 5 m 2 cm
= 3 x 100000 + 5 x 100 + 2
= 300000 + 500 + 2
= 300502 cm
Answer(s): 405600, 3008, 9314, 300502