Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 4 km 37 m = ______ cm
- 2 km 2 m = ______ m
- 2 km 541 m = _______ m
- 3 km 6 m 3 cm = _______ cm
(a)
1 km = 100000 cm
1 m = 100 cm
4 km 37 m
= 4 x 100000 + 37 x 100
= 400000 + 3700
= 403700 cm
(b)
1 km = 1000 m
2 km 2 m
= 2 x 1000 + 2
= 2000 + 2
= 2002 m
(c)
1 km = 1000 m
2 km 541 m
= 2 x 1000 + 541
= 2000 + 541
= 2541 m
(d)
1 km = 100000 cm
1 m = 100 cm
3 km 6 m 3 cm
= 3 x 100000 + 6 x 100 + 3
= 300000 + 600 + 3
= 300603 cm
Answer(s): 403700, 2002, 2541, 300603