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 yesterday's 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:
Tips to introduce your lesson...
- Round each number in the problem.
- Add the rounded numbers together, mental math is even better.
- 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?
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.
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.
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.
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.
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.
♦ 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!
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
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| Rounding to Estimate the Sum Center Game | Rounding to Estimate the Sum Task Cards |
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| Rounding to Estimate the Sum Color Your Answers | Rounding to Estimate the Sum BUNDLE |
Click here to see yesterday's 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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