1. Estimating Decimals

2. Rounding Rules
The digit to the right is greater or equal to 5, round up
The digit to the right is less than 5, round down

3. 4 and less let it rest, 5 and up bump it up
Rounding Jingle
4 and less let it rest,
5 and up bump it up

4. Guided Practice Round each decimal to the nearest whole number. 5.39 =
43.27 = = =
99.83 =

5. Guided Practice Round each decimal to the nearest tenth. 57.16 == = = =

6. Guided Practice Round each decimal to the nearest hundredths. 4.468 =
3.761 = =

7. Guided Practice Estimate each sum or difference. 3.96 + 8.31 =
9.67 – 3.81 = =
11.2 – 9.67 =

8. Problem Solving
Camera film costs $3.99 a roll. Wes needs 3 rolls to take pictures of the class party. He has $15. Does he have enough money?
Yes

9. Problem Solving
Flowers cost $5.99 a dozen. Faye wants to buy 2 dozen flowers. She also wants to buy a balloon that cost $4.50. Faye has $20. Does Faye have enough money to buy everything she wants?
Yes

10. Problem Solving Answer: $5.27
Eric bought pretzels for $1.89, peanuts for $2.39, and popcorn for $0.99. How much did he spend in all?
Answer: $5.27

11. Problem Solving Answer: about 45-50 minutes
A party is scheduled to last one hour. Mrs. Call wants to show a video that lasts between 10 to 15 minutes. About how much time will be left for other activities?
Answer: about minutes