1. Rounding Whole Numbers and Decimals
WE ARE LEARNING TO:
We will be able to round whole numbers
and decimals

2. Check out what Moby thinks of rounding
BrainPop Rounding Video- Click Here

3. Rounding Whole Numbers Remember the 4 steps
Underline the digit in the place to be rounded.
STEP 2:
Look at the digit to the right of the underlined digit
STEP 3:
If the digit is five or above… give it a shove (add 1 to the underlined digit)
STEP 4:
Replace all digits after the underlined digit with zeros

4. Rounding Decimals Remember the 4 steps
Underline the digit in the place to be rounded.
STEP 2:
Look at the digit to the right of the underlined digit
STEP 3:
If the digit is five or above… give it a shove (add 1 to the underlined digit)
STEP 4:
Drop the digit after the underlined digit

5. Let’s try one…
Mrs. Bogusch has a pair of Beats headphones. She told the students she would sell it to them for $147 rounded to the nearest ten. How much would you pay to own the Beats?
ANSWER: $150

6. How about this one…
Mrs. Kilgallon has a nice gently used Copper Mini Car. She told the students she would sell it to them for $13,349 rounded to the nearest hundred. How much would you pay to own the car?
ANSWER: $13,300

7. How about this one…
Mrs. Cassner has a rainbow loom. She told the students she would sell it to them for $17.89 rounded to the nearest tenth. How much would you pay to own the loom?
ANSWER: $17.90

8. Try a few on your own 1. 765 Answer: 800 2. 106,950 Answer: 107,000
3. 5,750
Answer: 5,800
4. 692,300
Answer: 690,000
5. 3,750
Answer: 5,400
Step 1- Underline the digit in the place to be rounded
Step 2- Look at the digit to the right of the underlined digit
Step 3- If the digit to the right is 5 or greater, add 1 to the underlined digit
Step 4- Replace all digits after the underlined digit with zeros

9. Real-World Problem
The table below shows a what a 95-pount 5th grader would weigh on the Sun and on different planets
Place
Weight (lb)
Jupiter
224.58
Mars
35.815
Sun
2,571.84
Round the weight of each place to the following place indicated:
1. Mars- tenths Jupiter- tens
3. Sun- thousands 4. Jupiter-tenths