Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 5 km 49 m = ______ cm
- 8 km 6 m = ______ m
- 6 km 115 m = _______ m
- 9 km 8 m 8 cm = _______ cm
(a)
1 km = 100000 cm
1 m = 100 cm
5 km 49 m
= 5 x 100000 + 49 x 100
= 500000 + 4900
= 504900 cm
(b)
1 km = 1000 m
8 km 6 m
= 8 x 1000 + 6
= 8000 + 6
= 8006 m
(c)
1 km = 1000 m
6 km 115 m
= 6 x 1000 + 115
= 6000 + 115
= 6115 m
(d)
1 km = 100000 cm
1 m = 100 cm
9 km 8 m 8 cm
= 9 x 100000 + 8 x 100 + 8
= 900000 + 800 + 8
= 900808 cm
Answer(s): 504900, 8006, 6115, 900808