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Flashcards

Tuesday, Oct 6 Lesson 3.6/3.7 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 When estimating quotients, use a comparable number that is in the multiples list of the divisor. Example 8.6 ÷ 2 ≈ 8 ÷ 2 = 4 8 is a comparable number to 8.6 and is easily divisible by 2.

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 ≈ ) Dividing a Decimal by a Whole Number. Step 2 – Divide and ignore the decimal point.

Divide Decimals by Whole Numbers Find 6.8÷ 2 ≈ ) 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 ≈ ) 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 ≈ ) It is very important the digits are lined up in the bracket!

Divide Decimals by Whole Numbers Round to the nearest tenth, if necessary. 8.4÷ 3 ≈ Estimate?

Divide Decimals by Whole Numbers Round 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 Round to the nearest tenth, if necessary. 8.4÷ 3 ≈ 3 Estimate? What is a comparable number for 6.8 that is divisible by 2 (in the multiples list of 2) ? 9 ÷ 3 = 3

Divide Decimals by Whole Numbers Round to the nearest tenth, if necessary. 8.4÷ 3 ≈ 3 Step 1?

Divide Decimals by Whole Numbers Round to the nearest tenth, if necessary. 8.4÷ 3 ≈ 3 3)8.4 Step 2?

Divide Decimals by Whole Numbers Round to the nearest tenth, if necessary. 8.4÷ 3 ≈ ) Step 3?

Divide Decimals by Whole Numbers Round to the nearest tenth, if necessary. 8.4÷ 3 ≈ ) Since we do not have a digit in the hundredths place, we do not need to round.

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

Divide Decimals by Whole Numbers Round to the nearest tenth, if necessary ÷ 17 ≈ ≈ ) This is how your homework 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 ÷ 3 ≈ Do this on your own.

Divide Decimals by Whole Numbers Round to the nearest tenth, if necessary ÷ 3 ≈ ≈ ) This is how your homework 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. 3.49÷ 4≈ Do this on your own

Divide Decimals by Whole Numbers Round to the nearest tenth, if necessary. 3.49÷ 4≈ ≈.9 4) This is how your homework should look. You will need to estimate, show work and circle answer.

Divide Decimals by Whole Numbers Round to the nearest tenth, if necessary. 7.7÷ 14 ≈ Do this on your own.

Divide Decimals by Whole Numbers

Round to the nearest tenth, if necessary. 7.7÷ 14 ≈ ≈.6 14)7.70 annex a zero

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 ≈ ≈.6 15)

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? JerryNateLukeJoshDan $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. JerryNateLukeJoshDan $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? $ ) JerryNateLukeJoshDan $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? )6.740 Annex a zero 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? $ Each person’s share 3)

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 ÷ 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 The quiz grades have been posted in ProgressBook. Re-quiz after school on Remember – the higher of the two grades will be entered into ProgressBook.

Divide Decimals by Whole Numbers Agenda Notes Homework – Homework Practice 3.6/3.7 Due Wednesday, Oct 7 Circle all answers and show all work. Chapter 3 Test -Tuesday, Oct 13 Accum Rev 3 due on Oct 13