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Lesson: Rounding to the Nearest Ten Mathematics • 3rd Grade

In this lesson, we will learn how to round whole numbers within 1000 to the nearest ten by identifying the tens numbers it is between on a number line.

Lesson Plan

Students will be able to

round a three-digit number to the nearest ten using a number line,
round a three-digit number to the nearest ten by considering the value of the ones digit.
say which numbers would round to a given value.

Lesson Video

Lesson Playlist

02:55
03:06
04:17

Lesson Worksheet

Q1:

To round 3-digit numbers to the nearest ten, use a number line.

Think about the number 437.

Which two multiples of 10 is 437 between?

Hint: We use the digit in the tens place to guide us.

What is 437 rounded to the nearest 10?

Hint: Think about which side of the midpoint 437 will be on.

Q2:

Jacob spent $127 and Jennifer spent $125.

Round the amount Jacob spent to the nearest ten.

Round the amount Jennifer spent to the nearest ten.

Compare both rounded amounts. Which rounded amount is higher?

Q3:

Olivia read a book of 213 pages. How many pages did she read, rounded to the nearest ten?

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