Multiplicative Comparison - Definition with Examples
What is Multiplicative Comparison?
Multiplicative comparison means comparing two things or sets that need multiplication..
For example, Sam has twice as many balloons as Sid has.
Sid as 3 balloons
Sam has twice as many balloons as Sid has.
So, number of balloons with Sam = 2 × 3 = 6
A multiplicative comparison problem can be defined as a problem in which:
Two verbal statements are used to compare two set of items, and
It determines a multiplication equation.
The equation includes numbers and alphabet, in which the alphabet is the variable
A building is 18 feet tall and the building is three times Jerry’s height. How tall is Jerry?
Let Jerry’s height be “h”
Height of the building = 18 ft which is 3 times Jerry’s height, that is, 3 times h
Therefore, 18 = 3 × h
Dividing both sides by 3, we get:
18 ÷ 3 = 3 × h ÷ 3
6 = h
h = 6 ft
Hence Jerry is 6 ft tall.
Multiplicative comparison problems usually use phrases like:
- Times as many (3 times as many candies)
- Times more (5 times more apples)
- Times as much (7 times as much as the blue ribbon)
- Times as large (10 times as large as a brick)
Here’s an example of how a multiplicative comparison word problem can be solved using comparison bar models.
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