Multiplication of decimals by a whole number

Question 1

A flea can jump up to 200 times its body length.
The body length of the flea is 2.5 mm.

What is the furthest distance the flea can jump?

Solution

The body length of the flea is 2.50 mm.

The flea can jump 200 times this length.

200 × 2.5	= 2 × 2.5 × 100
	= 5 × 100
	= 500.

Therefore the furthest distance the flea can jump is 500 mm.

Question 2

© Australian Mathematical Sciences Institute, except where indicated otherwise. This material is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported (CC BY-NC 3.0) licence http://creativecommons.org/licenses/by-nc/3.0/