A Simple Way to Estimate Answers
What is Rounding?
Rounding means changing a number to a nearby number that is easier to work with.
Examples:
18 rounds to 20
21 rounds to 20
49 rounds to 50
52 rounds to 50
Why Do We Round?
Rounding helps us:
Estimate answers
Check calculations
Spot mistakes
Build confidence
Important Message
Rounding does not give the exact answer.
It gives an estimate.
Final Message
An estimate helps us decide whether an answer makes sense.
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