In order to compare lengths (or distances), it is essential that we express
them in the same units.
Example 5
For each of the following pairs of lengths, which is greater?
a. 7.4 cm and 76 mm
b. 3.8 m and 370 cm
c. 840 m and 1 km
d. 5 km and 4985 m
Solution:
a. To compare 7.4 cm and 76 mm, convert 7.4 cm to mm.
b. To compare 3.8 m and 370 cm, convert 3.8 m to cm.
c. To compare 840 m and 1 km, convert 1 km to m.
d. To compare 5 km and 4985 m, convert 5 km to m.
Key Term
same units
|
