Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 9 km 27 m = ______ cm
- 3 km 5 m = ______ m
- 7 km 666 m = _______ m
- 4 km 5 m 9 cm = _______ cm
(a)
1 km = 100000 cm
1 m = 100 cm
9 km 27 m
= 9 x 100000 + 27 x 100
= 900000 + 2700
= 902700 cm
(b)
1 km = 1000 m
3 km 5 m
= 3 x 1000 + 5
= 3000 + 5
= 3005 m
(c)
1 km = 1000 m
7 km 666 m
= 7 x 1000 + 666
= 7000 + 666
= 7666 m
(d)
1 km = 100000 cm
1 m = 100 cm
4 km 5 m 9 cm
= 4 x 100000 + 5 x 100 + 9
= 400000 + 500 + 9
= 400509 cm
Answer(s): 902700, 3005, 7666, 400509