Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 9 km 41 m = ______ cm
- 3 km 5 m = ______ m
- 6 km 865 m = _______ m
- 8 km 5 m 3 cm = _______ cm
(a)
1 km = 100000 cm
1 m = 100 cm
9 km 41 m
= 9 x 100000 + 41 x 100
= 900000 + 4100
= 904100 cm
(b)
1 km = 1000 m
3 km 5 m
= 3 x 1000 + 5
= 3000 + 5
= 3005 m
(c)
1 km = 1000 m
6 km 865 m
= 6 x 1000 + 865
= 6000 + 865
= 6865 m
(d)
1 km = 100000 cm
1 m = 100 cm
8 km 5 m 3 cm
= 8 x 100000 + 5 x 100 + 3
= 800000 + 500 + 3
= 800503 cm
Answer(s): 904100, 3005, 6865, 800503