Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 2 km 17 m = ______ cm
- 7 km 9 m = ______ m
- 8 km 203 m = _______ m
- 3 km 6 m 4 cm = _______ cm
(a)
1 km = 100000 cm
1 m = 100 cm
2 km 17 m
= 2 x 100000 + 17 x 100
= 200000 + 1700
= 201700 cm
(b)
1 km = 1000 m
7 km 9 m
= 7 x 1000 + 9
= 7000 + 9
= 7009 m
(c)
1 km = 1000 m
8 km 203 m
= 8 x 1000 + 203
= 8000 + 203
= 8203 m
(d)
1 km = 100000 cm
1 m = 100 cm
3 km 6 m 4 cm
= 3 x 100000 + 6 x 100 + 4
= 300000 + 600 + 4
= 300604 cm
Answer(s): 201700, 7009, 8203, 300604