Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 7 km 46 m = ______ cm
- 5 km 3 m = ______ m
- 8 km 347 m = _______ m
- 3 km 4 m 7 cm = _______ cm
(a)
1 km = 100000 cm
1 m = 100 cm
7 km 46 m
= 7 x 100000 + 46 x 100
= 700000 + 4600
= 704600 cm
(b)
1 km = 1000 m
5 km 3 m
= 5 x 1000 + 3
= 5000 + 3
= 5003 m
(c)
1 km = 1000 m
8 km 347 m
= 8 x 1000 + 347
= 8000 + 347
= 8347 m
(d)
1 km = 100000 cm
1 m = 100 cm
3 km 4 m 7 cm
= 3 x 100000 + 4 x 100 + 7
= 300000 + 400 + 7
= 300407 cm
Answer(s): 704600, 5003, 8347, 300407