Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 4 km 77 m = ______ cm
- 6 km 5 m = ______ m
- 6 km 119 m = _______ m
- 5 km 8 m 3 cm = _______ cm
(a)
1 km = 100000 cm
1 m = 100 cm
4 km 77 m
= 4 x 100000 + 77 x 100
= 400000 + 7700
= 407700 cm
(b)
1 km = 1000 m
6 km 5 m
= 6 x 1000 + 5
= 6000 + 5
= 6005 m
(c)
1 km = 1000 m
6 km 119 m
= 6 x 1000 + 119
= 6000 + 119
= 6119 m
(d)
1 km = 100000 cm
1 m = 100 cm
5 km 8 m 3 cm
= 5 x 100000 + 8 x 100 + 3
= 500000 + 800 + 3
= 500803 cm
Answer(s): 407700, 6005, 6119, 500803