Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 7 km 92 m = ______ cm
- 6 km 4 m = ______ m
- 7 km 353 m = _______ m
- 5 km 2 m 9 cm = _______ cm
(a)
1 km = 100000 cm
1 m = 100 cm
7 km 92 m
= 7 x 100000 + 92 x 100
= 700000 + 9200
= 709200 cm
(b)
1 km = 1000 m
6 km 4 m
= 6 x 1000 + 4
= 6000 + 4
= 6004 m
(c)
1 km = 1000 m
7 km 353 m
= 7 x 1000 + 353
= 7000 + 353
= 7353 m
(d)
1 km = 100000 cm
1 m = 100 cm
5 km 2 m 9 cm
= 5 x 100000 + 2 x 100 + 9
= 500000 + 200 + 9
= 500209 cm
Answer(s): 709200, 6004, 7353, 500209