Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 5 km 75 m = ______ cm
- 4 km 6 m = ______ m
- 3 km 447 m = _______ m
- 3 km 4 m 2 cm = _______ cm
(a)
1 km = 100000 cm
1 m = 100 cm
5 km 75 m
= 5 x 100000 + 75 x 100
= 500000 + 7500
= 507500 cm
(b)
1 km = 1000 m
4 km 6 m
= 4 x 1000 + 6
= 4000 + 6
= 4006 m
(c)
1 km = 1000 m
3 km 447 m
= 3 x 1000 + 447
= 3000 + 447
= 3447 m
(d)
1 km = 100000 cm
1 m = 100 cm
3 km 4 m 2 cm
= 3 x 100000 + 4 x 100 + 2
= 300000 + 400 + 2
= 300402 cm
Answer(s): 507500, 4006, 3447, 300402