Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 7 km 34 m = ______ cm
- 7 km 3 m = ______ m
- 8 km 182 m = _______ m
- 4 km 4 m 2 cm = _______ cm
(a)
1 km = 100000 cm
1 m = 100 cm
7 km 34 m
= 7 x 100000 + 34 x 100
= 700000 + 3400
= 703400 cm
(b)
1 km = 1000 m
7 km 3 m
= 7 x 1000 + 3
= 7000 + 3
= 7003 m
(c)
1 km = 1000 m
8 km 182 m
= 8 x 1000 + 182
= 8000 + 182
= 8182 m
(d)
1 km = 100000 cm
1 m = 100 cm
4 km 4 m 2 cm
= 4 x 100000 + 4 x 100 + 2
= 400000 + 400 + 2
= 400402 cm
Answer(s): 703400, 7003, 8182, 400402