Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 5 km 15 m = ______ cm
- 9 km 8 m = ______ m
- 8 km 664 m = _______ m
- 9 km 9 m 4 cm = _______ cm
(a)
1 km = 100000 cm
1 m = 100 cm
5 km 15 m
= 5 x 100000 + 15 x 100
= 500000 + 1500
= 501500 cm
(b)
1 km = 1000 m
9 km 8 m
= 9 x 1000 + 8
= 9000 + 8
= 9008 m
(c)
1 km = 1000 m
8 km 664 m
= 8 x 1000 + 664
= 8000 + 664
= 8664 m
(d)
1 km = 100000 cm
1 m = 100 cm
9 km 9 m 4 cm
= 9 x 100000 + 9 x 100 + 4
= 900000 + 900 + 4
= 900904 cm
Answer(s): 501500, 9008, 8664, 900904