Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 2 km 33 m = ______ cm
- 4 km 6 m = ______ m
- 4 km 745 m = _______ m
- 4 km 5 m 8 cm = _______ cm
(a)
1 km = 100000 cm
1 m = 100 cm
2 km 33 m
= 2 x 100000 + 33 x 100
= 200000 + 3300
= 203300 cm
(b)
1 km = 1000 m
4 km 6 m
= 4 x 1000 + 6
= 4000 + 6
= 4006 m
(c)
1 km = 1000 m
4 km 745 m
= 4 x 1000 + 745
= 4000 + 745
= 4745 m
(d)
1 km = 100000 cm
1 m = 100 cm
4 km 5 m 8 cm
= 4 x 100000 + 5 x 100 + 8
= 400000 + 500 + 8
= 400508 cm
Answer(s): 203300, 4006, 4745, 400508