Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 3 km 77 m = ______ cm
- 5 km 4 m = ______ m
- 5 km 910 m = _______ m
- 9 km 4 m 2 cm = _______ cm
(a)
1 km = 100000 cm
1 m = 100 cm
3 km 77 m
= 3 x 100000 + 77 x 100
= 300000 + 7700
= 307700 cm
(b)
1 km = 1000 m
5 km 4 m
= 5 x 1000 + 4
= 5000 + 4
= 5004 m
(c)
1 km = 1000 m
5 km 910 m
= 5 x 1000 + 910
= 5000 + 910
= 5910 m
(d)
1 km = 100000 cm
1 m = 100 cm
9 km 4 m 2 cm
= 9 x 100000 + 4 x 100 + 2
= 900000 + 400 + 2
= 900402 cm
Answer(s): 307700, 5004, 5910, 900402