Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 8 km 51 m = ______ cm
- 6 km 7 m = ______ m
- 6 km 861 m = _______ m
- 2 km 2 m 6 cm = _______ cm
(a)
1 km = 100000 cm
1 m = 100 cm
8 km 51 m
= 8 x 100000 + 51 x 100
= 800000 + 5100
= 805100 cm
(b)
1 km = 1000 m
6 km 7 m
= 6 x 1000 + 7
= 6000 + 7
= 6007 m
(c)
1 km = 1000 m
6 km 861 m
= 6 x 1000 + 861
= 6000 + 861
= 6861 m
(d)
1 km = 100000 cm
1 m = 100 cm
2 km 2 m 6 cm
= 2 x 100000 + 2 x 100 + 6
= 200000 + 200 + 6
= 200206 cm
Answer(s): 805100, 6007, 6861, 200206