1 / 17

3-6

3-6. Dividing Decimals by Whole Numbers. Course 1. Warm Up. Problem of the Day. Lesson Presentation. 3-6. Dividing Decimals by Whole Numbers. Course 1. Warm Up Divide. 1. 56,000 ÷ 8 2. 5,219 ÷ 17 3. 9,180 ÷ 12. 7,000. 307. 765. 3-6. Dividing Decimals by Whole Numbers. Course 1.

sbrase
Télécharger la présentation

3-6

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. 3-6 Dividing Decimals by Whole Numbers Course 1 Warm Up Problem of the Day Lesson Presentation

  2. 3-6 Dividing Decimals by Whole Numbers Course 1 Warm Up Divide. 1.56,000 ÷ 8 2. 5,219 ÷ 17 3. 9,180 ÷ 12 7,000 307 765

  3. 3-6 Dividing Decimals by Whole Numbers Course 1 Problem of the Day In his pocket, Bill has $0.77 made up of 10 coins. What are the coins? 1 quarter, 3 dimes, 4 nickels, and 2 pennies

  4. 3-6 Dividing Decimals by Whole Numbers Course 1 Learn to divide decimals by whole numbers.

  5. 3-6 Dividing Decimals by Whole Numbers Remember! Course 1 Quotient 0.15 0.75 5 Divisor Dividend

  6. 3-6 Dividing Decimals by Whole Numbers Place a decimal point in the quotient directly above the decimal point in the dividend. Divide as you would with whole numbers. Course 1 Additional Example 1A: Dividing a Decimal by a Whole Number Find the quotient. 0.84 ÷ 3 0. 2 8 3 0.84 – 6 24 – 24 0

  7. 3-6 Dividing Decimals by Whole Numbers Place a decimal point in the quotient directly above the decimal point in the dividend. Divide as you would with whole numbers. Course 1 Additional Example 1B: Dividing a Decimal by a Whole Number Find the quotient. 3.56 ÷ 4 0. 8 9 4 3.56 – 32 36 – 36 0

  8. 3-6 Dividing Decimals by Whole Numbers Place a decimal point in the quotient directly above the decimal point in the dividend. Divide as you would with whole numbers. Course 1 Check It Out: Example 1A Find the quotient. 0.72 ÷ 3 0. 2 4 3 0.72 – 6 12 – 12 0

  9. 3-6 Dividing Decimals by Whole Numbers Place a decimal point in the quotient directly above the decimal point in the dividend. Divide as you would with whole numbers. Course 1 Check It Out: Example 1B Find the quotient. 2.96 ÷ 4 0. 7 4 4 2.96 – 28 16 – 16 0

  10. 3-6 Dividing Decimals by Whole Numbers Substitute 9 for x. Sometimes you need to use a zero as a placeholder. 9 > 3, so place a zero in the quotient and divide 9 into 36. Course 1 Additional Example 2A: Evaluating Decimal Expressions Evaluate 0.936 ÷ x for the given value of x. x = 9 0.936 ÷ x 0.936 ÷ 9 0. 1 0 4 9 0.936 – 9 3 – 0 36 – 36 0

  11. 3-6 Dividing Decimals by Whole Numbers Substitute 18 for x. Sometimes you need to use a zero as a placeholder. 18 > 9, so place a zero in the quotient and divide 18 into 93. Course 1 Additional Example 2B: Evaluating Decimal Expressions Evaluate 0.936 ÷ x for the given value of x. x = 18 0.936 ÷ x 0.936 ÷ 18 0. 0 5 2 18 0.936 – 0 93 – 90 36 – 36 0

  12. 3-6 Dividing Decimals by Whole Numbers Substitute 6 for x. Sometimes you need to use a zero as a placeholder. 6 > 3, so place a zero in the quotient and divide 6 into 36. Course 1 Check It Out: Example 2A Evaluate 0.636 ÷ x for the given value of x. x = 6 0.636 ÷ x 0.636 ÷ 6 0. 1 0 6 6 0.636 – 6 3 – 0 36 – 36 0

  13. 3-6 Dividing Decimals by Whole Numbers Substitute 12 for x. Sometimes you need to use a zero as a placeholder. 12 > 6, so place a zero in the quotient and divide 12 into 63. Course 1 Check It Out: Example 2B Evaluate 0.636 ÷ x for the given value of x. x = 12 0.636 ÷ x 0.636 ÷ 12 0. 0 5 3 12 0.636 – 0 63 – 60 36 – 36 0

  14. 3-6 Dividing Decimals by Whole Numbers Remember! Multiplication can “undo” division. To check your answer to a division problem, multiply the divisor by the quotient. Course 1

  15. 3-6 Dividing Decimals by Whole Numbers Place a decimal point in the quotient directly above the decimal point in the dividend. Divide as you would with whole numbers. Course 1 Additional Example 3: Consumer ApplicationJodi and three of her friends are making a tile design. The materials cost $10.12. If they share the cost equally, how much should each person pay? $10.12 should be divided into four equal groups. Divide $10.12 by 4. $2. 5 3 4 $10.12 – 8 21 – 20 Check 12 2.53  4 = 10.12 – 12 Each person should pay $2.53. 0

  16. 3-6 Dividing Decimals by Whole Numbers Place a decimal point in the quotient directly above the decimal point in the dividend. Divide as you would with whole numbers. Course 1 Check It Out: Example 3 Ty and three of his friends are building a fence. The lumber cost $21.44. If they share the cost equally, how much should each person pay? $21.44 should be divided into four equal groups. Divide $21.44 by 4. $5. 3 6 4 $21.44 – 20 14 – 12 Check 24 5.36  4 = 21.44 – 24 Each person should pay $5.36. 0

  17. 3-6 Dividing Decimals by Whole Numbers Course 1 Insert Lesson Title Here Lesson Quiz 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? 0.71 0.39 0.25 0.05 $18.25

More Related