Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 3 km 69 m = ______ cm
- 6 km 9 m = ______ m
- 6 km 170 m = _______ m
- 7 km 3 m 2 cm = _______ cm
(a)
1 km = 100000 cm
1 m = 100 cm
3 km 69 m
= 3 x 100000 + 69 x 100
= 300000 + 6900
= 306900 cm
(b)
1 km = 1000 m
6 km 9 m
= 6 x 1000 + 9
= 6000 + 9
= 6009 m
(c)
1 km = 1000 m
6 km 170 m
= 6 x 1000 + 170
= 6000 + 170
= 6170 m
(d)
1 km = 100000 cm
1 m = 100 cm
7 km 3 m 2 cm
= 7 x 100000 + 3 x 100 + 2
= 700000 + 300 + 2
= 700302 cm
Answer(s): 306900, 6009, 6170, 700302