5 minute check find each quotient. 1. 182 ÷ 7 2. 345 ÷ 6 3. 792 ÷ 33 4. 811 ÷ 79

Tuesday, Oct 30

5 Minute CheckFind each quotient.1. 182 7

2. 345 6

3. 792 33

4. 811 79


5 Minute CheckFind each quotient.1. 182 7 0267)182 -14 42 -42 005 Minute CheckFind each quotient.2. 345 6

5 Minute CheckFind each quotient.2. 345 6 057R3 6)345 -30 45 -42 35 Minute CheckFind each quotient.3. 792 33

5 Minute CheckFind each quotient.3. 792 33 02433)792 -66 132 -132 0005 Minute CheckFind each quotient.4. 811 79


10R2179)811 -79 21 FlashcardsTuesday, Oct 15Lesson 3.7

Divide Decimals by Whole NumbersDivide Decimals by Whole NumbersObjective: To understand how to divide decimals by whole numbers.

Divide Decimals by Whole NumbersAt the end of this lesson you should be able to answer the following questions.

How can estimating quotients help place the decimal point correctly?

When is estimation not accurate?Divide Decimals by Whole NumbersExample

8.6 2.2 8 2 = 4

When estimating quotients, use comparable numbers that are easily divisible. Divide Decimals by Whole NumbersWhen dividing a decimal by a whole number, divide as with whole numbers. Then place the decimal point in the quotient directly above its place in the dividend.Divide Decimals by Whole NumbersFind 6.8 2.

Estimate.

What is a comparable number for 6.8 that is divisible by 2?

Divide Decimals by Whole NumbersFind 6.8 2.

Estimate.

What is a comparable number for 6.8 that is divisible by 2? 6

6 2 = 3

Divide Decimals by Whole NumbersFind 6.8 2. 2)6.8

Dividing a decimal by a whole number.Step 1 Place the numbers in the dividing bracket.

Divide Decimals by Whole NumbersFind 6.8 2. 3 42)6.8 -6 08 -8 0Dividing a decimal by a whole number.Step 2 Divide and ignore the decimal point.

Divide Decimals by Whole NumbersFind 6.8 2. 3.42)6.8 -6 08 -8 0Dividing a decimal by a whole number.Step 3 Bring the decimal point to the quotient, directly above the dividend.

Divide Decimals by Whole NumbersFind 7.5 3 =

Estimate?

Divide Decimals by Whole NumbersFind 7.5 3 =

Estimate?

9 3 = 3, or

6 3 = 2

Step 1?

Divide Decimals by Whole NumbersFind 7.5 3 = 3)7.5

Step 2?

Divide Decimals by Whole NumbersFind 7.5 3 = 2 53)7.5 -6 15 -15 0

Step 3?

Divide Decimals by Whole NumbersFind 7.5 3 = 2.5 2.53)7.5 -6 15 -15 0

It is very important to line the digits up.

Divide Decimals by Whole NumbersSometimes when dividing the answer needs to be more precise than just having a remainder.

When a precise answer is needed, annex zeros and keep dividing until the remainder is zero.

Divide Decimals by Whole NumbersFind 7.7 14

Estimate?


Estimate?

8 16 = or 0.5

Before we start dividing make a multiples list for 14, if needed.14: 14, 28, 42, 56, 70, 84

Divide Decimals by Whole NumbersFind 7.7 14 0514)7.7 - 70 0 7 Since we have a remainder, annex a zero and keep dividing.

14: 14, 28, 42, 56, 70, 84

Divide Decimals by Whole NumbersFind 7.7 14 05514)7.70 Annex a zero - 70 and keep dividing 0 70 -70 0

14: 14, 28, 42, 56, 70, 84

Divide Decimals by Whole NumbersFind 7.7 14 0.5514)7.70 Do not forget to - 70 place the decimal point. 0 70 -70 0

14: 14, 28, 42, 56, 70, 84


(Do this on your own)


Estimate?


Estimate?

This one is a bit tricky.

7.5 15 = .5

15: 15, 30, 45, 60, 75, 90

Divide Decimals by Whole NumbersFind 9.48 15 0.63215)9.480 Annex a zero - 90 0 48 -45 30 30 0

15: 15, 30, 45, 60, 75, 90




Estimate?

Divide Decimals by Whole NumbersFind 3.49 4. Estimate?

4 4 = 1

Actual Quotient?

4: 4, 8, 12, 16, 20, 24, 28, 32, 36,40..

Divide Decimals by Whole NumbersFind 3.49 4. 0.8725 4)3.4900 Annex two zeros - 32 0 29 -28 10 -8 20

4: 4, 8, 12, 16, 20, 24, 28, 32, 36,40..

Divide Decimals by Whole NumbersFind 39.79 3. Round the answer to the nearest tenth.



Estimate?


39 3 = 13

Actual Quotient?

3: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33,36,39

Divide Decimals by Whole NumbersFind 39.79 3. Round the answer to the nearest tenth. 13.26 3)39.79 - 3 09 -9 Even though we have a 07 remainder we can stop -6 here. Why? 19

3: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33,36,39

Divide Decimals by Whole NumbersFind 39.79 3. Round the answer to the nearest tenth. 13.26 3)39.79 - 3 09 -9 07 -6 19

3: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33,36,39

44Divide Decimals by Whole NumbersFind 39.79 3. Round the answer to the nearest tenth.

13.26 13.3 3)39.79 - 3 09 -9 07 -6 19

3: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33,36,39

Divide Decimals by Whole NumbersLin is making a care package to his brother. The table gives the cost for mailing packages. If Lins care package weighs 3 pounds, how much is the cost per pound?


Divide Decimals by Whole NumbersLin is making a care package to his brother. The table gives the cost for mailing packages. If Lins care package weighs 3 pounds, how much is the cost per pound? 2.246 3)6.740 Annex a zero -6 07 -06 14 -12 Because hundredths are the 20 smallest denomination used in -18 money we can round $2.246 to $2.25

Divide Decimals by Whole NumbersKristen and her two friends are sharing the cost of a funnel cake. The funnel cake costs $5.49. If Kristen has $2.00, how much will she have left after she pays her share?

(Do this on your own) Divide Decimals by Whole NumbersKristen and her two friends are sharing the cost of a funnel cake. The funnel cake costs $5.49. If Kristen has $2.00, how much will she have left after she pays her share? 1.83 Each persons share 3)5.49 -3 24 2.00 -24 -1.83 09 .17 - 9 0

Divide Decimals by Whole NumbersComplete the Guided Practice on page 234. When complete bring to the desk and show Mr. Avery. Agenda NotesHomework Homework Practice 3-7Due Wednesday, Oct 16Must show all work.

Chapter 3 Test Friday, Oct 18Help session Thursday, Oct 17 2:15-3PM

5 minute check find each quotient. 1. 182 ÷ 7 2. 345 ÷ 6 3. 792 ÷ 33 4. 811 ÷ 79

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