Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 8 km 53 m = ______ cm
- 4 km 4 m = ______ m
- 9 km 482 m = _______ m
- 4 km 7 m 2 cm = _______ cm
(a)
1 km = 100000 cm
1 m = 100 cm
8 km 53 m
= 8 x 100000 + 53 x 100
= 800000 + 5300
= 805300 cm
(b)
1 km = 1000 m
4 km 4 m
= 4 x 1000 + 4
= 4000 + 4
= 4004 m
(c)
1 km = 1000 m
9 km 482 m
= 9 x 1000 + 482
= 9000 + 482
= 9482 m
(d)
1 km = 100000 cm
1 m = 100 cm
4 km 7 m 2 cm
= 4 x 100000 + 7 x 100 + 2
= 400000 + 700 + 2
= 400702 cm
Answer(s): 805300, 4004, 9482, 400702