Answer to Question #350417 in Algebra for Millie

Question

In the context of choosing a "whole", explain when a "fifth" is not always equal to a "fifth". Give an example. (2)

15. Use the number line to round 73 562 to the nearest multiple of 1 000.

Answer 1

1.

When choosing a "whole", a "fifth" will only be equal to 1/5 if the "whole" is equal to one. Otherwise, a "fifth" of the whole will have a different value from 1/5. For example, if there are 20 girls in a class, 20 represents the "whole", which means 4 is a "fifth" of the "whole"

2.

To round to the nearest thousand, we look at the last three digits. If these digits are 500 or greater, then we round the thousands digit up, and if they are less than 500, then we round down, keeping the thousand's digit the same.

73,562 rounds up to 74,000