Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 6 km 17 m = ______ cm
- 8 km 2 m = ______ m
- 9 km 639 m = _______ m
- 3 km 5 m 5 cm = _______ cm
(a)
1 km = 100000 cm
1 m = 100 cm
6 km 17 m
= 6 x 100000 + 17 x 100
= 600000 + 1700
= 601700 cm
(b)
1 km = 1000 m
8 km 2 m
= 8 x 1000 + 2
= 8000 + 2
= 8002 m
(c)
1 km = 1000 m
9 km 639 m
= 9 x 1000 + 639
= 9000 + 639
= 9639 m
(d)
1 km = 100000 cm
1 m = 100 cm
3 km 5 m 5 cm
= 3 x 100000 + 5 x 100 + 5
= 300000 + 500 + 5
= 300505 cm
Answer(s): 601700, 8002, 9639, 300505