Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 8 km 50 m = ______ cm
- 9 km 2 m = ______ m
- 8 km 914 m = _______ m
- 9 km 3 m 5 cm = _______ cm
(a)
1 km = 100000 cm
1 m = 100 cm
8 km 50 m
= 8 x 100000 + 50 x 100
= 800000 + 5000
= 805000 cm
(b)
1 km = 1000 m
9 km 2 m
= 9 x 1000 + 2
= 9000 + 2
= 9002 m
(c)
1 km = 1000 m
8 km 914 m
= 8 x 1000 + 914
= 8000 + 914
= 8914 m
(d)
1 km = 100000 cm
1 m = 100 cm
9 km 3 m 5 cm
= 9 x 100000 + 3 x 100 + 5
= 900000 + 300 + 5
= 900305 cm
Answer(s): 805000, 9002, 8914, 900305