Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 5 km 29 m = ______ cm
- 5 km 2 m = ______ m
- 8 km 795 m = _______ m
- 3 km 9 m 5 cm = _______ cm
(a)
1 km = 100000 cm
1 m = 100 cm
5 km 29 m
= 5 x 100000 + 29 x 100
= 500000 + 2900
= 502900 cm
(b)
1 km = 1000 m
5 km 2 m
= 5 x 1000 + 2
= 5000 + 2
= 5002 m
(c)
1 km = 1000 m
8 km 795 m
= 8 x 1000 + 795
= 8000 + 795
= 8795 m
(d)
1 km = 100000 cm
1 m = 100 cm
3 km 9 m 5 cm
= 3 x 100000 + 9 x 100 + 5
= 300000 + 900 + 5
= 300905 cm
Answer(s): 502900, 5002, 8795, 300905