Dividing Decimals by Whole Numbers

Dividing Decimals by Whole Numbers

by Aaron Ross

​Learning Goal/Target

Students will be able to divide decimals by whole numbers by using the saying: "Raise the Roof"​

​Review from the unit so far...

​Adding and subtracting decimals:

• ​Do we line them up?

• ​24.61 + 2.3

• ​Do they share the same rules?​

​

​Multiplying Decimals:

• ​Do we line them up?

• ​15.27 x 1.2

Multiple Choice

What is 3.8 - 3.19?

• 0.61

• 1.45

• 0.79

• 2.45

Multiple Choice

 Jackie rode her bike around Capaha Park last week. The trail is 8.54 miles long. If she rode around the park 4 times last week, how many miles did she travel in all?

• 3.41 miles

• 8.54 miles

• 34.16 miles

• 341.6 miles

​Division Vocabulary

Multiple Choice

What is the dividend in the following equation? 542 ÷ 2 = 271

• 2

• 542

• 271

Multiple Choice

Identity the circled number.

• quotient

• dividend

• divisor

• remainder

​Dividing Decimals By Whole Numbers

1. ​When the dividend (number inside the house) is a decimal, you can follow the rules for dividing whole numbers.

2. ​However, remember to keep your place values organized and bring the decimal straight up into the quotient (answer)

   1. ​THINK: RAISE THE ROOF!!

​Examples

​Try on your paper:

​

​

Poll

How are we feeling so far with our learning goal: Dividing Decimals by whole numbers?

• Great!!! I can take test now and ace!

• Getting there!!

• On my way, but need more help/examples

• What are we learning about again? (LOST!)

Multiple Choice

8.169 $$\div$$  3

• 2.723

• 2.598

• 2.399

• 1.991

Multiple Choice

580.8 $$\div$$  22

• 22.9

• 26.4

• 26.7

• 24.4

Multiple Choice

98.65 $$\div$$  5

• 19.55

• 19.73

• 19.03

• 19.44

Multiple Choice

You are hosting Thanksgiving at your house this year. You invited 8 people. You need to buy a turkey big enough to feed you and your family, so you bought a 7.47 pound turkey. How much will each person at Thanksgiving dinner get? ROUND TO NEAREST HUNDREDTH PLACE

• 1.04 lbs

• 0.90 lbs

• 0.93 lbs

• 0.85 lbs

Multiple Choice

NASA launched a rocket that traveled for 706.68 miles. It took the rocket 78 minutes to travel that distance. How many miles did the rocket travel per minute?

• 10.01 miles

• 9.06 miles

• 9.09 miles

• 9.34 miles

Open Ended

Confidence Level Check (Be honest): 1-5 with 1 being you have no idea and 5 being you can ace a test today. And anything in between. If you have a 2 or lower, please explain what you need further help with.