Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 2 km 86 m = ______ cm
- 2 km 4 m = ______ m
- 5 km 292 m = _______ m
- 5 km 6 m 9 cm = _______ cm
(a)
1 km = 100000 cm
1 m = 100 cm
2 km 86 m
= 2 x 100000 + 86 x 100
= 200000 + 8600
= 208600 cm
(b)
1 km = 1000 m
2 km 4 m
= 2 x 1000 + 4
= 2000 + 4
= 2004 m
(c)
1 km = 1000 m
5 km 292 m
= 5 x 1000 + 292
= 5000 + 292
= 5292 m
(d)
1 km = 100000 cm
1 m = 100 cm
5 km 6 m 9 cm
= 5 x 100000 + 6 x 100 + 9
= 500000 + 600 + 9
= 500609 cm
Answer(s): 208600, 2004, 5292, 500609