Question

List the measurements below from from smallest to largest. 7cm 18mm 1m 3dm

Answer 1

To give us a basis of comparison in arranging the given values from smallest to largest, we should expressed all values in one unit only. For this case, let us convert all units in terms of mm so that we can compare.

 

We know that:

1 m = 10 dm = 100 cm = 1000 mm

 

Therefore,

A. 7 cm            --> 7 cm (1000 mm / 100 cm) = 70 mm

B. 18 mm

C. 1 m              --> 1 m (1000 mm / 1 m) = 1000 mm

D. 3 dm           --> 3 dm (1000 mm / 10 dm) = 300 mm

 

Since they are now expressed in same units, we can arrange the numbers from smallest to largest:

 

18 mm, 7 cm, 3 dm, 1 m