Bell Work September 9

1. Carpeting costs $7.99 a yard. If Jan buys 12.4 yards, how much will it cost her?

2. Jackie just bought a new car. Use the information in the picture to find out how far she will get on the highway before she runs out of gas and has to call a tow truck.

Parts of a Division Problem:

5 7515

dividend

divisor

quotient

Divisor

Quotient

0.150.755

Dividend

Parts of a Division Problem with decimals

• How do we divide with decimals?

3.6 Dividing Decimals

EQ: How do you solve problems involving the addition, subtraction, multiplication, and

division of decimals? (SPI: 0606.2.3) /CC.6EE.2b

To divide a decimal by a whole number move the decimal point straight up and then divide as usual

Modeling .35 ÷ 7

5 7.5

Example 1

Terminating decimal is a decimal number that ends, or terminates in the quotient.

Let’s do a few together

8 27.2

Find the quotient. 0.72 ÷ 3

3 0.720.24

No more remainders……what will we do?

130 ÷ 20

Showing the Remainder as a Decimal.

Place the decimal point in the quotient above the decimal point in the dividend. Add a zero to the dividend.

Continue dividing.

-120

5.60.13020

100 -100

You try this….

2 ÷ 3

Repeating decimal is a decimals that one or more numbers repeat.

Now you try.Hint: You may need to add more than one zero!

6.128

374

5. At a fruit stand, 8 pounds of apples cost $2.80. Identify the average cost of apples per pound.

A. $35.00

B. $3.50

C. $0.35

D. $0.03

.

How well do you understand dividing decimals?

I don’t understand

I nearly understand

I fully understand

Ticket out the Door

Find each quotient.

1. 3.12 ÷ 8 2. 5.68 ÷ 8

Evaluate the expression 1.25 ÷ x for the given

value of x.

3. x = 5 4. x = 25

5. The tennis team is having 3 of their tennis

rackets restrung. The total cost is $54.75. What is

the average cost per racket?

0.710.39

0.25 0.05

$18.25

42510011 0010 1010 1101 0001 0100 1011

3.6 Dividing Decimals

EQ: How do you solve problems involving the addition, subtraction, multiplication, and

division of decimals? (SPI: 0606.2.3) /CC.6EE.2b

3-7 Dividing Decimals by a Decimal

I CAN divide with a decimal in the divisor

Divide.

1. 4.8 ÷ 2

2. 16.1 ÷ 7

3. 0.36 ÷ 3

4. 25.28 ÷ 4

2.42.3

0.12

6.32

Review from yesterday…..

Composition Notes

Ex 1: Divide by a whole number2.35 ÷ 5

Ex 2: Divide by a decimal number6.85 ÷ .5

Ex 3: Add a decimal and zeros3764 ÷ 6

• To divide a decimal by a decimal move the decimal point in the divisor over to make a whole number.

• Then you move the same amount of spaces in your dividend.

1.35 ÷ .45

Find the quotient.

5.2 ÷ 1.3

1.3 5.2 Multiply the divisor and dividend by the same power of ten.

13 524

–520

5.2 ÷ 1.3 = 4

1. Identify the quotient.

72 0.9

A. 70

B. 79

C. 80

D. 90

You try this….

Find each quotient.1. 49 ÷ 0.7 2. 21.63 ÷ 2.13. 38.43 ÷ 6.14. 16.9 ÷ 5.25. John spent $13.44 renting 4 videos for the

weekend. What was the cost per video?6. After driving 191.1 miles, the Changs’ used

10.5 gallons of gas. On average, how many miles did they drive per gallon of gas?

3-7 Dividing Decimals by a Decimal

SPI 6.2.3

I CAN divide with a decimal in the divisor!!

Review What We Know

• Turn to your shoulder partner one person go over all the steps for dividing when the decimal is in the dividend. – What do you do with the decimals

• Other partner go over all the steps when dividing if the decimals is in the divisor.

• Together discuss the difference and similarities between both.

• 27 ÷ .9

• 15 ÷ .05

2. Identify the quotient.

36.12 4.2

A. 8.6

B. 8.8

C. 9.5

D. 9.6

0.36 61.30

1. 4.8 ÷ 2

2. 25.28 ÷ 4

3. 62.4 ÷ 0.5

4. 13.44 ÷ 0.4

5. 4.32 ÷ 1.2

2.4

6.32

QuizAnswer the following on a separate sheet of paper

124.8

33.63.6

.

How well do you understand dividing decimals?

I don’t understand

I nearly understand

I fully understand