Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 8 km 86 m = ______ cm
- 5 km 2 m = ______ m
- 3 km 193 m = _______ m
- 3 km 5 m 2 cm = _______ cm
(a)
1 km = 100000 cm
1 m = 100 cm
8 km 86 m
= 8 x 100000 + 86 x 100
= 800000 + 8600
= 808600 cm
(b)
1 km = 1000 m
5 km 2 m
= 5 x 1000 + 2
= 5000 + 2
= 5002 m
(c)
1 km = 1000 m
3 km 193 m
= 3 x 1000 + 193
= 3000 + 193
= 3193 m
(d)
1 km = 100000 cm
1 m = 100 cm
3 km 5 m 2 cm
= 3 x 100000 + 5 x 100 + 2
= 300000 + 500 + 2
= 300502 cm
Answer(s): 808600, 5002, 3193, 300502