Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 5 km 26 m = ______ cm
- 5 km 3 m = ______ m
- 5 km 252 m = _______ m
- 4 km 7 m 5 cm = _______ cm
(a)
1 km = 100000 cm
1 m = 100 cm
5 km 26 m
= 5 x 100000 + 26 x 100
= 500000 + 2600
= 502600 cm
(b)
1 km = 1000 m
5 km 3 m
= 5 x 1000 + 3
= 5000 + 3
= 5003 m
(c)
1 km = 1000 m
5 km 252 m
= 5 x 1000 + 252
= 5000 + 252
= 5252 m
(d)
1 km = 100000 cm
1 m = 100 cm
4 km 7 m 5 cm
= 4 x 100000 + 7 x 100 + 5
= 400000 + 700 + 5
= 400705 cm
Answer(s): 502600, 5003, 5252, 400705