Rounding and Comparing

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

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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