Question

Four whole numbers are each rounded to the nearest 10 the sum of the rounded numbers is 90 what is the maximum amount of the original four numbers

Answer 1

106=34+14+14+44
This is because these nos rounded off and added will be 90

Answer 2

The maximum amount of the original four numbers is 110.

Explanation:

• Four whole numbers are each rounded to the nearest 10, which means each number can go +5 or -5.

• The sum of the rounded numbers is 90, the maximum amount of the original four numbers is if +5 are added with each 4 original number.

• So each number would have an extra +5.

• And then the maximum number is 90 + (5 x 4) is equal to 110.

• Or if the rounded up no. were 10,20,30,30.
• The sum of these numbers is 90.
• They can go up to 15,25,35,35.
• So the sum of this is 110.