Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 7 km 76 m = ______ cm
- 2 km 2 m = ______ m
- 6 km 101 m = _______ m
- 9 km 7 m 7 cm = _______ cm
(a)
1 km = 100000 cm
1 m = 100 cm
7 km 76 m
= 7 x 100000 + 76 x 100
= 700000 + 7600
= 707600 cm
(b)
1 km = 1000 m
2 km 2 m
= 2 x 1000 + 2
= 2000 + 2
= 2002 m
(c)
1 km = 1000 m
6 km 101 m
= 6 x 1000 + 101
= 6000 + 101
= 6101 m
(d)
1 km = 100000 cm
1 m = 100 cm
9 km 7 m 7 cm
= 9 x 100000 + 7 x 100 + 7
= 900000 + 700 + 7
= 900707 cm
Answer(s): 707600, 2002, 6101, 900707