Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 6 km 23 m = ______ cm
- 7 km 3 m = ______ m
- 2 km 138 m = _______ m
- 6 km 3 m 2 cm = _______ cm
(a)
1 km = 100000 cm
1 m = 100 cm
6 km 23 m
= 6 x 100000 + 23 x 100
= 600000 + 2300
= 602300 cm
(b)
1 km = 1000 m
7 km 3 m
= 7 x 1000 + 3
= 7000 + 3
= 7003 m
(c)
1 km = 1000 m
2 km 138 m
= 2 x 1000 + 138
= 2000 + 138
= 2138 m
(d)
1 km = 100000 cm
1 m = 100 cm
6 km 3 m 2 cm
= 6 x 100000 + 3 x 100 + 2
= 600000 + 300 + 2
= 600302 cm
Answer(s): 602300, 7003, 2138, 600302