Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 8 km 85 m = ______ cm
- 9 km 3 m = ______ m
- 8 km 133 m = _______ m
- 2 km 9 m 6 cm = _______ cm
(a)
1 km = 100000 cm
1 m = 100 cm
8 km 85 m
= 8 x 100000 + 85 x 100
= 800000 + 8500
= 808500 cm
(b)
1 km = 1000 m
9 km 3 m
= 9 x 1000 + 3
= 9000 + 3
= 9003 m
(c)
1 km = 1000 m
8 km 133 m
= 8 x 1000 + 133
= 8000 + 133
= 8133 m
(d)
1 km = 100000 cm
1 m = 100 cm
2 km 9 m 6 cm
= 2 x 100000 + 9 x 100 + 6
= 200000 + 900 + 6
= 200906 cm
Answer(s): 808500, 9003, 8133, 200906