Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 8 km 87 m = ______ cm
- 8 km 9 m = ______ m
- 6 km 524 m = _______ m
- 2 km 7 m 4 cm = _______ cm
(a)
1 km = 100000 cm
1 m = 100 cm
8 km 87 m
= 8 x 100000 + 87 x 100
= 800000 + 8700
= 808700 cm
(b)
1 km = 1000 m
8 km 9 m
= 8 x 1000 + 9
= 8000 + 9
= 8009 m
(c)
1 km = 1000 m
6 km 524 m
= 6 x 1000 + 524
= 6000 + 524
= 6524 m
(d)
1 km = 100000 cm
1 m = 100 cm
2 km 7 m 4 cm
= 2 x 100000 + 7 x 100 + 4
= 200000 + 700 + 4
= 200704 cm
Answer(s): 808700, 8009, 6524, 200704