Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 6 km 10 m = ______ cm
- 7 km 9 m = ______ m
- 4 km 722 m = _______ m
- 3 km 4 m 7 cm = _______ cm
(a)
1 km = 100000 cm
1 m = 100 cm
6 km 10 m
= 6 x 100000 + 10 x 100
= 600000 + 1000
= 601000 cm
(b)
1 km = 1000 m
7 km 9 m
= 7 x 1000 + 9
= 7000 + 9
= 7009 m
(c)
1 km = 1000 m
4 km 722 m
= 4 x 1000 + 722
= 4000 + 722
= 4722 m
(d)
1 km = 100000 cm
1 m = 100 cm
3 km 4 m 7 cm
= 3 x 100000 + 4 x 100 + 7
= 300000 + 400 + 7
= 300407 cm
Answer(s): 601000, 7009, 4722, 300407