Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 5 km 49 m = ______ cm
- 3 km 3 m = ______ m
- 3 km 704 m = _______ m
- 2 km 5 m 2 cm = _______ cm
(a)
1 km = 100000 cm
1 m = 100 cm
5 km 49 m
= 5 x 100000 + 49 x 100
= 500000 + 4900
= 504900 cm
(b)
1 km = 1000 m
3 km 3 m
= 3 x 1000 + 3
= 3000 + 3
= 3003 m
(c)
1 km = 1000 m
3 km 704 m
= 3 x 1000 + 704
= 3000 + 704
= 3704 m
(d)
1 km = 100000 cm
1 m = 100 cm
2 km 5 m 2 cm
= 2 x 100000 + 5 x 100 + 2
= 200000 + 500 + 2
= 200502 cm
Answer(s): 504900, 3003, 3704, 200502