Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 5 km 10 m = ______ cm
- 5 km 4 m = ______ m
- 6 km 283 m = _______ m
- 7 km 6 m 9 cm = _______ cm
(a)
1 km = 100000 cm
1 m = 100 cm
5 km 10 m
= 5 x 100000 + 10 x 100
= 500000 + 1000
= 501000 cm
(b)
1 km = 1000 m
5 km 4 m
= 5 x 1000 + 4
= 5000 + 4
= 5004 m
(c)
1 km = 1000 m
6 km 283 m
= 6 x 1000 + 283
= 6000 + 283
= 6283 m
(d)
1 km = 100000 cm
1 m = 100 cm
7 km 6 m 9 cm
= 7 x 100000 + 6 x 100 + 9
= 700000 + 600 + 9
= 700609 cm
Answer(s): 501000, 5004, 6283, 700609