Comparing Numbers and Rounding Numbers

Rounding and Comparing Large Numbers

by Mrs. Alfano

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​Remember the steps of rounding?

​1. Find out what you're rounding to (nearest 10? 10 000?)

​Eg. Round 67 203 to the nearest thousand

​I am going to highlight or underline the thousands place, because then I know which place value digit I'm working with.

​

​2. Identify your benchmark numbers (number line)

​Eg. 67 203 is between

​

​67 000 -------------------------- 68 000

​​3. Do I round up or down?

​Eg. 67 203 is closer to 67 000, so I round down.

Multiple Choice

Round 678 to the nearest hundred

• 600

• 700

• 680

• 670

Multiple Choice

Round 2 457 to the nearest ten

• 2000

• 2450

• 2500

• 2460

Fill in the Blanks

Round 32 009 to the nearest ten thousand

Fill in the Blanks

Round 45 931 to the nearest thousand

Open Ended

When rounded to the nearest 100 a mystery number rounds to 700. If rounded to the nearest 10, the mystery number rounds to 750. What could be the mystery number? Give 3 different examples.

​Next up, independent assignment

​Click the link on the next slide and find the Rounding Independent Practice assignment in the Math section of Google Classroom

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