Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 9 km 88 m = ______ cm
- 8 km 9 m = ______ m
- 6 km 878 m = _______ m
- 8 km 2 m 2 cm = _______ cm
(a)
1 km = 100000 cm
1 m = 100 cm
9 km 88 m
= 9 x 100000 + 88 x 100
= 900000 + 8800
= 908800 cm
(b)
1 km = 1000 m
8 km 9 m
= 8 x 1000 + 9
= 8000 + 9
= 8009 m
(c)
1 km = 1000 m
6 km 878 m
= 6 x 1000 + 878
= 6000 + 878
= 6878 m
(d)
1 km = 100000 cm
1 m = 100 cm
8 km 2 m 2 cm
= 8 x 100000 + 2 x 100 + 2
= 800000 + 200 + 2
= 800202 cm
Answer(s): 908800, 8009, 6878, 800202