Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 7 km 26 m = ______ cm
- 8 km 9 m = ______ m
- 3 km 487 m = _______ m
- 4 km 6 m 6 cm = _______ cm
(a)
1 km = 100000 cm
1 m = 100 cm
7 km 26 m
= 7 x 100000 + 26 x 100
= 700000 + 2600
= 702600 cm
(b)
1 km = 1000 m
8 km 9 m
= 8 x 1000 + 9
= 8000 + 9
= 8009 m
(c)
1 km = 1000 m
3 km 487 m
= 3 x 1000 + 487
= 3000 + 487
= 3487 m
(d)
1 km = 100000 cm
1 m = 100 cm
4 km 6 m 6 cm
= 4 x 100000 + 6 x 100 + 6
= 400000 + 600 + 6
= 400606 cm
Answer(s): 702600, 8009, 3487, 400606