Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 3 km 12 m = ______ cm
- 4 km 6 m = ______ m
- 2 km 334 m = _______ m
- 8 km 5 m 3 cm = _______ cm
(a)
1 km = 100000 cm
1 m = 100 cm
3 km 12 m
= 3 x 100000 + 12 x 100
= 300000 + 1200
= 301200 cm
(b)
1 km = 1000 m
4 km 6 m
= 4 x 1000 + 6
= 4000 + 6
= 4006 m
(c)
1 km = 1000 m
2 km 334 m
= 2 x 1000 + 334
= 2000 + 334
= 2334 m
(d)
1 km = 100000 cm
1 m = 100 cm
8 km 5 m 3 cm
= 8 x 100000 + 5 x 100 + 3
= 800000 + 500 + 3
= 800503 cm
Answer(s): 301200, 4006, 2334, 800503