Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 5 km 23 m = ______ cm
- 9 km 5 m = ______ m
- 2 km 669 m = _______ m
- 2 km 6 m 3 cm = _______ cm
(a)
1 km = 100000 cm
1 m = 100 cm
5 km 23 m
= 5 x 100000 + 23 x 100
= 500000 + 2300
= 502300 cm
(b)
1 km = 1000 m
9 km 5 m
= 9 x 1000 + 5
= 9000 + 5
= 9005 m
(c)
1 km = 1000 m
2 km 669 m
= 2 x 1000 + 669
= 2000 + 669
= 2669 m
(d)
1 km = 100000 cm
1 m = 100 cm
2 km 6 m 3 cm
= 2 x 100000 + 6 x 100 + 3
= 200000 + 600 + 3
= 200603 cm
Answer(s): 502300, 9005, 2669, 200603