Do You Teach How to Estimate the Sums In Math?

 Estimate the Sums

A quick way to estimate the sum of two numbers is to round each number and then add the rounded numbers. {See this post for help on rounding.} It is likely that this won't be the exact answer but it may be close enough for some purposes. Students need this mental math not only for future math classes and math procedures, but it is also a life skill. Were you over charged at the furniture store? Did you receive the correct amount of change back from the waitress? Problem solving extends to all aspects of their world.

Tips to introduce your lesson...

How to estimate a sum by rounding:

• Round each number in the problem.
• Add the rounded numbers together, mental math is even better.

More reasons WHY you would use rounding to estimate the sum:

• Check to see if you have about enough money to buy something.
• Get a ball park idea if they have a correct answer to a problem. Is 500 an intelligent answer for 23 + 31?

Rounding to Estimate the Sum Center Game

This math resource includes:
Four center game pages in color AND
Four center game printable pages in black and white to use as a Make and Take Math Center!
Two MATH CENTER signs, one in color and one in gray scale.
Teacher directions and Common core sheet in color and gray scale.

 

Rounding to Estimate the Sum Color Your Answers

This math resource includes:

FIVE printables that are made to be an additional resource for any math series. Use them for your math center, small group, RTI pull out, seat work or homework.

 

Rounding to Estimate the Sum Task Cards

This math resource includes:
36 Task Cards and Recording Printable Worksheet, with Answer Sheet Included.
These task cards are made to be an additional resource for your math center, small group, RTI pull out, seat work or homework.

 Task cards also come in black and white, perfect for a parent Make and Take Night or weekly homework.

** BUNDLE AVAILABLE **

Rounding to Estimate the Sum BUNDLE

♦ This convenience bundle contains the following three resources:
1. Rounding to Estimate Sums 3.NBT.A.1 Task Cards and Recording Sheet ~ School Themed
2. Quick and Easy Center and Printables - Rounding to Estimate Sums 3.NBT.A.1 - School Themed and
3. Color Your Answers Printables - Rounding to Estimate Sums - School Themed!

Rounding to Estimate the Sums Resources

Rounding to Estimate the Sum Center Game	Rounding to Estimate the Sum Task Cards
Rounding to Estimate the Sum Color Your Answers	Rounding to Estimate the Sum BUNDLE

Click here to see this post on Rounding to the Nearest Ten or Hundred.

How about you? Do you have any tips or tricks you would like to share? Please leave them in the comments and I'll also including them in my social media.

 

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The post ARE YOU TEACHING HOW TO ESTIMATE THE SUMS? appeared first on Fern Smith's Classroom Ideas.