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01/05/10 Divide Decimals #5

01/05/10 Divide Decimals #5. LT: I will divide decimals. Warm Up: 5×6 1×6 4 ×6. 9×6 6×10 6×8. 6×2 6×3 7×6. 6×6 6×100 6×11. Today’s Plan: -Multiplication Practice -Correct Homework -Divide Decimals. Learning Target:

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01/05/10 Divide Decimals #5

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  1. 01/05/10 Divide Decimals #5 LT: I will divide decimals. • Warm Up: • 5×6 • 1×6 • 4×6 • 9×6 • 6×10 • 6×8 • 6×2 • 6×3 • 7×6 • 6×6 • 6×100 • 6×11 Today’s Plan: -Multiplication Practice -Correct Homework -Divide Decimals Learning Target: -I will divide decimals.

  2. 01/05/10 Divide Decimals #5 LT: I will divide decimals. Timed Test 1-5 Today’s Plan: -Multiplication Practice -Correct Homework -Divide Decimals Learning Target: -I will divide decimals.

  3. 01/05/10 Divide Decimals #5 LT: I will divide decimals. Correct Homework Today’s Plan: -Multiplication Practice -Correct Homework -Divide Decimals Learning Target: -I will divide decimals.

  4. 4-4 Dividing Decimals by Integers 7 36.75 Course 2 Additional Example 1A: Dividing Decimals by Integers Divide. Estimate to check whether the answer is reasonable. A. 36.75 ÷ 7 . 5 2 5 ) Place the decimal point for the answer directly above the decimal under the division symbol. –35 1 7 –14 Divide as with whole numbers. 3 5 –3 5 0 Estimate 5.25 is a reasonable answer. 35 ÷ 7 = 5

  5. 4-4 Dividing Decimals by Integers 3 0.87 Course 2 Additional Example 1B: Dividing Decimals by Integers Divide. Estimate to check whether the answer is reasonable. B. 0.87 ÷ 3 Place the decimal point for the answer directly above the decimal under the division symbol. . 9 2 0 ) –6 27 –27 Divide as with whole numbers. 0 Estimate 0.9 ÷ 3 = 0.3 0.29 is a reasonable answer.

  6. 4-4 Dividing Decimals by Integers Remember! When you divide two numbers with different signs, the answer is negative. Course 2

  7. 4-4 Dividing Decimals by Integers Course 2 Additional Example 1C: Dividing Decimals by Integers Divide. Estimate to check whether the answer is reasonable. C. 82.08 ÷ (–27) . 3 0 4 ) The signs are different. 27 82.08 –81 Think: 82.08 ÷ 27. 1 0 –0 Place the decimal point for the answer directly above the decimal under the division symbol. 1 08 –108 0 82.08 ÷ (–27) = –3.04 Estimate 90 ÷ –30 = –3 The answer is reasonable.

  8. 4-4 Dividing Decimals by Integers 4 39.16 Course 2 Insert Lesson Title Here Try This: Example 1A Divide. Estimate to check whether the answer is reasonable. A. 39.16 ÷ 4 9 . 7 9 ) Place the decimal point for the answer directly above the decimal under the division symbol. –36 3 1 –28 Divide as with whole numbers. 3 6 –3 6 0 Estimate 9.79 is a reasonable answer. 40 ÷ 4 = 10

  9. 4-4 Dividing Decimals by Integers 4 0.56 Course 2 Insert Lesson Title Here Try This: Example 1B Divide. Estimate to check whether the answer is reasonable. B. 0.56 ÷ 4 Place the decimal point for the answer directly above the decimal under the division symbol. . 1 4 0 ) –4 16 –16 Divide as with whole numbers. 0 Estimate 0.6 ÷ 4 = 0.15 0.14 is a reasonable answer.

  10. 4-4 Dividing Decimals by Integers Course 2 Insert Lesson Title Here Try This: Example 1C Divide. Estimate to check whether the answer is reasonable. C. 65.16 ÷ (–12) . 5 4 3 ) The signs are different. 12 65.16 –60 Think: 65.16 ÷ 12 5 1 –4 8 Place the decimal point for the answer directly above the decimal under the division symbol. 36 –36 0 65.16 ÷ (–12) = –5.43 Estimate The answer is reasonable. 60 ÷ –12 = –5

  11. 01/05/10 Divide Decimals #5 • Assignment • Page 208 #8-14 Today’s Plan: -Multiplication Practice -Correct Homework -Divide Decimals Learning Target: -I will divide decimals.

  12. Division Vocabulary • The dividendis the number that is being divided. • The divisoris the number that the dividend will be divided by. • The quotient is the number of times the divisor will go into the dividend. (The answer to the division problem.) dividend÷divisor= quotient or quotient divisor )dividend • In this example 5 is the divisor, 36 is the dividend, 7.2 is the quotient. 7.2 36 ÷5= 7.2 ) 5 36.0 – 35 10 – 10 0

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