Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 4 km 10 m = ______ cm
- 5 km 2 m = ______ m
- 6 km 520 m = _______ m
- 7 km 3 m 3 cm = _______ cm
(a)
1 km = 100000 cm
1 m = 100 cm
4 km 10 m
= 4 x 100000 + 10 x 100
= 400000 + 1000
= 401000 cm
(b)
1 km = 1000 m
5 km 2 m
= 5 x 1000 + 2
= 5000 + 2
= 5002 m
(c)
1 km = 1000 m
6 km 520 m
= 6 x 1000 + 520
= 6000 + 520
= 6520 m
(d)
1 km = 100000 cm
1 m = 100 cm
7 km 3 m 3 cm
= 7 x 100000 + 3 x 100 + 3
= 700000 + 300 + 3
= 700303 cm
Answer(s): 401000, 5002, 6520, 700303