Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 9 km 20 m = ______ cm
- 2 km 4 m = ______ m
- 6 km 916 m = _______ m
- 9 km 4 m 6 cm = _______ cm
(a)
1 km = 100000 cm
1 m = 100 cm
9 km 20 m
= 9 x 100000 + 20 x 100
= 900000 + 2000
= 902000 cm
(b)
1 km = 1000 m
2 km 4 m
= 2 x 1000 + 4
= 2000 + 4
= 2004 m
(c)
1 km = 1000 m
6 km 916 m
= 6 x 1000 + 916
= 6000 + 916
= 6916 m
(d)
1 km = 100000 cm
1 m = 100 cm
9 km 4 m 6 cm
= 9 x 100000 + 4 x 100 + 6
= 900000 + 400 + 6
= 900406 cm
Answer(s): 902000, 2004, 6916, 900406