Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 8 km 97 m = ______ cm
- 6 km 4 m = ______ m
- 9 km 674 m = _______ m
- 7 km 4 m 7 cm = _______ cm
(a)
1 km = 100000 cm
1 m = 100 cm
8 km 97 m
= 8 x 100000 + 97 x 100
= 800000 + 9700
= 809700 cm
(b)
1 km = 1000 m
6 km 4 m
= 6 x 1000 + 4
= 6000 + 4
= 6004 m
(c)
1 km = 1000 m
9 km 674 m
= 9 x 1000 + 674
= 9000 + 674
= 9674 m
(d)
1 km = 100000 cm
1 m = 100 cm
7 km 4 m 7 cm
= 7 x 100000 + 4 x 100 + 7
= 700000 + 400 + 7
= 700407 cm
Answer(s): 809700, 6004, 9674, 700407