Objective: Estimate the sum or difference of whole numbers.
Activate Prior Knowledge:
Review homework
New Knowledge:
To estimate the sum or difference of numbers we use rounding.
Examples:
- 31875 - 24985 =
30000 - 20000 = 10000
- 1999 + 2452 + 1852 =
2000 + 2000 + 2000 = 6000
Application:p.18(3-10)
Reflection:
Today I learned ...
2 comments:
Hi ,teacher, I think it's good that you leave what we learned at least 3 days ago, because if someone missed something in the notebook, he/she can write it !!
Bye !!!
I am glad you like using the math blog.
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