Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 2 km 27 m = ______ cm
- 9 km 2 m = ______ m
- 3 km 216 m = _______ m
- 4 km 6 m 2 cm = _______ cm
(a)
1 km = 100000 cm
1 m = 100 cm
2 km 27 m
= 2 x 100000 + 27 x 100
= 200000 + 2700
= 202700 cm
(b)
1 km = 1000 m
9 km 2 m
= 9 x 1000 + 2
= 9000 + 2
= 9002 m
(c)
1 km = 1000 m
3 km 216 m
= 3 x 1000 + 216
= 3000 + 216
= 3216 m
(d)
1 km = 100000 cm
1 m = 100 cm
4 km 6 m 2 cm
= 4 x 100000 + 6 x 100 + 2
= 400000 + 600 + 2
= 400602 cm
Answer(s): 202700, 9002, 3216, 400602