1.6. Estimation of Whole Number Multiplication and Division

Front

What is the scenario presented in the text regarding Craig and the highlighters?

Back

Craig accidentally subscribed to receive 1700 highlighters every month for a year instead of placing a single order.

Tags

CCSS.RI.5.5

CCSS.RI.6.5

CCSS.RI.7.5

CCSS.RI.8.5

CCSS.RI.9-10.5

Front

What does Craig need to estimate regarding the highlighters?

Back

Craig needs to estimate the total number of highlighters the company will receive over the course of the year.

Front

What concept will you learn in this section?

Back

You will learn how to estimate products and quotients of whole numbers using rounding.

Front

What is a product in mathematical terms?

Back

A product is the answer to a multiplication problem.

Tags

CCSS.3.OA.A.1

Front

What is a quotient in mathematical terms?

Back

A quotient is the answer to a division problem.

Tags

CCSS.3.OA.A.2

Front

What is the first rule for rounding when estimating products and quotients?

Back

If the number to the right of the digit you are rounding is less than 5, round down (keep the number being rounded as it is).

Tags

CCSS.4.NBT.B.5

Front

What is the second rule for rounding when estimating products and quotients?

Back

If the number to the right of the digit you are rounding is greater than 5, round up.

Tags

CCSS.5.NBT.B.7