5 Minute Check Find each quotient. 1. 179 ÷ 7 2. 337 ÷ 6 3. 723 ÷ 3 4. 878 ÷ 9

5 Minute Check Find each quotient. 1. 179 ÷ 7

5 Minute Check Find each quotient. 1. 179 ÷ 7 025 4 7 7)179 -0 17 -14 39 -35 04

5 Minute Check Find each quotient. 2. 337 ÷ 6

5 Minute Check Find each quotient. 2. 337 ÷ 6 056 1 6 6)337 0 33 -30 37 -36 1

5 Minute Check Find each quotient. 3. 723 ÷ 3

5 Minute Check Find each quotient. 3. 723 ÷ 3 240 2 3 3)723 -6 12 -12 02

5 Minute Check Find each quotient. 3. 723 ÷ 3 241 3)723 -6 12 -12 03 -3 0

5 Minute Check Find each quotient. 4. 878 ÷ 9

5 Minute Check Find each quotient. 4. 878 ÷ 9 097 5 9 9)878 -0 87 -81 68 - 63 5

You worked 8 hours at your job and last week you made $60. 00 You worked 8 hours at your job and last week you made $60.00. How much do you make per hour?

Lesson 3.7 Estimate and Divide Decimals by Whole Numbers Wednesday, Aug 31 Lesson 3.7 Estimate and Divide Decimals by Whole Numbers

Divide Decimals by Whole Numbers Objective: To understand how to estimate and divide decimals by whole numbers.

Divide Decimals by Whole Numbers Lesson 3.6 is estimation and will be incorporated into lessons 3.7 and 3.8 Why is it helpful to estimate quotients?

Divide Decimals by Whole Numbers When estimating quotients with decimals, use comparable numbers that are easy to divide mentally. Convert the decimal to a whole number that is easily divisible by the other whole number.

Divide Decimals by Whole Numbers Example 8.6 ÷ 2 ≈ What number is close to 8.6 and divisible by 2?

Divide Decimals by Whole Numbers Example 8.6 ÷ 2 ≈ 8 ÷ 2 8 is a comparable number to 8.6 and is easily divisible by 2.

Divide Decimals by Whole Numbers Example 8.6 ÷ 2 ≈ 8 ÷ 2 = 4

Divide Decimals by Whole Numbers Estimate 11.25÷ 3. What number is close to 11.25 and divisible by 3?

Divide Decimals by Whole Numbers Estimate 11.25÷ 3. 12 ÷ 3 = 4 3, 6, 9, 12, 15

Divide Decimals by Whole Numbers Estimate 49.8 ÷ 7 (Do this on your own)

Divide Decimals by Whole Numbers Estimate 49.8 ÷ 7 49 ÷ 7 = 7 7: 7, 14, 21, 28, 35, 42, 49….

Divide Decimals by Whole Numbers Estimate 98.1÷ 25 (Do this on your own)

Divide Decimals by Whole Numbers Estimate 98.1÷ 25 4 25)100 25: 25, 50, 75, 100…..

Divide Decimals by Whole Numbers Estimate 32 ÷ 3.9 (Do this on your own)

Divide Decimals by Whole Numbers Estimate 32 ÷ 3.9 32 ÷ 4 = 8 4: 4, 8, 12, 16, 20, 24, 28, 32….

Divide Decimals by Whole Numbers When dividing a decimal by a whole number, divide as with whole numbers. Then place the decimal point in the quotient directly above it’s place in the dividend.

Divide Decimals by Whole Numbers Find 6.8÷ 2 ≈ Estimate. What is a comparable number for 6.8 that is divisible by 2 (in the multiples list of 2) ?

Divide Decimals by Whole Numbers Find 6.8÷ 2 ≈ 3 Estimate. What is a comparable number for 6.8 that is divisible by 2 (in the multiples list of 2) ? 6 ÷ 2 = 3

Divide Decimals by Whole Numbers Find 6.8÷ 2 ≈ 3 Dividing a Decimal by a Whole Number. Step 1 – Place the numbers in the dividing bracket.

Divide Decimals by Whole Numbers Find 6.8÷ 2 ≈ 3 2)6.8 Dividing a Decimal by a Whole Number. Step 1 – Place the numbers in the dividing bracket.

Divide Decimals by Whole Numbers Find 6.8÷ 2 ≈ 3 2)6.8 Note – the first number in the expression ALWAYS goes inside the bracket.

Divide Decimals by Whole Numbers Find 6.8÷ 2 ≈ 3 2)6.8 Dividing a Decimal by a Whole Number. Step 2 – Divide and ignore the decimal point.

Divide Decimals by Whole Numbers Find 6.8÷ 2 ≈ 3 3 4 2)6.8 -6 08 -8 0 Dividing a Decimal by a Whole Number. Step 2 – Divide and ignore the decimal point.

Divide Decimals by Whole Numbers Find 6.8÷ 2 ≈ 3 3 4 2)6.8 -6 08 -8 0 Dividing a Decimal by a Whole Number. Step 3 – Bring the decimal point to the quotient, directly above the dividend.

Divide Decimals by Whole Numbers Find 6.8÷ 2 ≈ 3 3.4 2)6.8 -6 08 -8 0 Dividing a Decimal by a Whole Number. Step 3 – Bring the decimal point to the quotient, directly above the dividend.

Divide Decimals by Whole Numbers Find 6.8÷ 2 ≈ 3 3.4 2)6.8 -6 08 -8 0 It is very important the digits are lined up in the bracket!

Divide Decimals by Whole Numbers Estimate then Divide. Show all work and circle all actual answers. Round the actual answer to the nearest tenth, if necessary. 8.4÷ 3 ≈ Estimate?

Divide Decimals by Whole Numbers Estimate then Divide. Show all work and circle all actual answers. Round the actual answer to the nearest tenth, if necessary. 8.4÷ 3 ≈ Estimate? What is a comparable number for 8.4 that is divisible by 3 (in the multiples list of 3) ?

Divide Decimals by Whole Numbers Estimate then Divide. Show all work and circle all actual answers. Round the actual answer to the nearest tenth, if necessary. 8.4÷ 3 ≈ 3 9 ÷ 3 = 3

Divide Decimals by Whole Numbers Estimate then Divide. Show all work and circle all actual answers. Round the actual answer to the nearest tenth, if necessary. 8.4÷ 3 ≈ 3 Step 1?

Divide Decimals by Whole Numbers Estimate then Divide. Show all work and circle all actual answers. Round the actual answer to the nearest tenth, if necessary. 8.4÷ 3 ≈ 3 3)8.4 Step 2?

Divide Decimals by Whole Numbers Estimate then Divide. Show all work and circle all actual answers. Round the actual answer to the nearest tenth, if necessary. 8.4÷ 3 ≈ 3 2 8 3)8.4 -6 24 -24 Step 3?

Divide Decimals by Whole Numbers Estimate then Divide. Show all work and circle all actual answers. Round the actual answer to the nearest tenth, if necessary. 8.4÷ 3 ≈ 3 2.8 3)8.4 -6 24 -24

Divide Decimals by Whole Numbers Estimate then Divide. Show all work and circle all actual answers. Round the actual answer to the nearest tenth, if necessary. 22.8÷ 3 ≈ Do this on your own.

Divide Decimals by Whole Numbers Round to the nearest tenth, if necessary. 22.8÷ 3 ≈ 7 07.6 3)22.8 -0 22 -21 18 -18 0 This is how your assignment should look.

Divide Decimals by Whole Numbers Estimate then Divide. Show all work and circle all actual answers. Round the actual answer to the nearest tenth, if necessary. 3.49÷ 4≈ Do this on your own

Divide Decimals by Whole Numbers Round to the nearest tenth, if necessary. 3.49÷ 4 ≈ 1 0.87 ≈ 0.9 4)3.49 - 0 34 - 32 29 -28 1 This is how your assignment should look. You will need to estimate, show work and circle answer.

Divide Decimals by Whole Numbers Estimate then Divide. Show all work and circle all actual answers. Round the actual answer to the nearest tenth, if necessary. 39.79÷ 3 ≈ Do this on your own.

Divide Decimals by Whole Numbers Round to the nearest tenth, if necessary. 39.79÷ 3 ≈ 13 13.26 ≈ 13.3 3)39.79 - 3 09 -9 07 -6 19 -18 1 This is how your assignment should look. You will need to round the decimal, add the ≈ , and estimate. You will need to show work and circle answer.

Divide Decimals by Whole Numbers Round to the nearest tenth, if necessary. 55.08 ÷ 17 ≈ Do this on your own.

Divide Decimals by Whole Numbers Round to the nearest tenth, if necessary. 55.08 ÷ 17 ≈ 3 03.24 ≈ 3.2 17)55.08 - 51 40 -34 68 -68 0 This is how your assignment should look. You will need to round the decimal, add the ≈ , and estimate. You will need to show work and circle answer.

Divide Decimals by Whole Numbers Round to the nearest tenth, if necessary. 9.48÷ 15 ≈ Do this on your own.

Divide Decimals by Whole Numbers Round to the nearest tenth, if necessary. 9.48÷ 15 ≈ 0.6 0.63 ≈ .6 15)9.48 - 90 48 -45 3 9.48 15 ≈ 10 15 = 2 3 ≈ 0.67

Divide Decimals by Whole Numbers The chart shows how much money Jerry and his friends have. What is the average? Do this on your own How do you find the average? Jerry Nate Luke Josh Dan $1.24 $1.44 $2.10 $1.68 $1.59

Divide Decimals by Whole Numbers The chart shows how much money Jerry and his friends have. What is the average? Do this on your own How do you find the average? Add the numbers up and divide by amount of numbers. Jerry Nate Luke Josh Dan $1.24 $1.44 $2.10 $1.68 $1.59

Divide Decimals by Whole Numbers The chart shows how much money the Jerry and his friends have. What is the average? $1.61 1.61 1.24 5)8.05 1.44 -5 2.10 30 1.68 -30 1.59 05 8.05 -05 Jerry Nate Luke Josh Dan $1.24 $1.44 $2.10 $1.68 $1.59

Divide Decimals by Whole Numbers Lin is making a care package to his brother. The table gives the cost for mailing packages. If Lin’s care package weighs 3 pounds, how much is the cost per pound? (Do this on your own)

Divide Decimals by Whole Numbers Lin is making a care package to his brother. The table gives the cost for mailing packages. If Lin’s 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 Numbers Kristen 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 Numbers Kristen 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? $0.17 1.83 Each person’s share 3)5.49 -3 24 2.00 -24 -1.83 09 .17 - 9

Divide Decimals by Whole Numbers Amanda is finding 11.2 ÷ 14. Find her mistake and correct it.

Divide Decimals by Whole Numbers Amanda is finding 11.2 ÷ 14. Find her mistake and correct it. She placed the decimal point in the wrong spot. 11.2 ÷ 14 = 0.8

Divide Decimals by Whole Numbers Is the quotient 2.7 ÷ 3 greater or less than 1? Explain.

Divide Decimals by Whole Numbers Is the quotient 2.7 ÷ 3 greater or less than 1? Explain. Less than; the dividend, 2.7, is less than the divisor,3.

Divide Decimals by Whole Numbers Agenda Notes Skills Practice 3.7 Due by the end of class. Odd Numbers Only! Work on MobyMax when complete Chapter 3 Test Wednesday, Sept 7