Lesson: Estimating Products: Multiply Numbers up to Three Digits Mathematics • 5th Grade

In this lesson, we will learn how to use rounding and compatible numbers to estimate the products of two- and three-digit numbers.

Lesson Plan

Students will be able to

estimate the product of two numbers with up to three digits by rounding the factors to the nearest 10 or 100,
estimate the product of two numbers with up to three digits using compatible numbers.

Q1:

Find the nearest approximation to .

Q2:

Round 199 to the nearest hundred.

Round 14 to the nearest ten.

Use the above results to estimate the product of .

Q3:

Find the exact result.

Estimate the product by rounding to the nearest ten.

Is the estimated value greater than the exact value?