1. Estimating Operations with Decimals

2. Warm Up Guess Estimation Based on little or no evidence
Possible Answers
Guess
Estimation
Based on little or no evidence
Not the real answer
Educated Guess

3. Flippable

4. Estimating Addition and Subtraction of Decimals
A common way to estimate when adding and subtracting decimals is to round each number.
Example1: Kim bought a shirt for $14.78, a scarf for $9.20 and a belt for $ About how much money did she spend?
$ rounds to $15.00
$ rounds to $9.00
$ rounds to $12.00
Kim spent about $ 36.00

5. Practice Estimate each problem.1)
2) – 2.39
3). Kelly ran 4.35 miles on Monday, 3.67 miles on Tuesday and 3.8 miles on Friday. About how many miles did she run during the week?
4 + 6 =10
7-2=5
= 12 miles

7. This is one possible answer.
This is one possible answer.
This is one possible answer.

8. These are possible answers.
These are possible answers.
= 605
790-3 = 787
34 x 10= 340
No, 5 x 5 =25

9. Closure
Give an example of a time when it would be helpful to estimate.