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Multiplying and Dividing Integers Course 3 - Warm Up

Learn about multiplying and dividing integers with Course 3 Warm Up activities. Practice solving problems, completing pyramids, and using the order of operations.

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Multiplying and Dividing Integers Course 3 - Warm Up

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  1. 1-6 Multiplying and Dividing Integers Course 3 Warm Up Problem of the Day Lesson Presentation

  2. 1-6 Multiplying and Dividing Integers 192 49 36 16 7 9 Course 3 Warm Up Multiply or divide. 1. 5(8) 40 2. 6(12) 72 3. 4 4. 7 12 5. 18(7) 126 6.

  3. 1-6 Multiplying and Dividing Integers Course 3 Problem of the Day Complete the pyramid by filling in the missing numbers. Each number is the sum of the numbers in the two boxes below it. –4 –8 –1 5 2 –3

  4. 1-6 Multiplying and Dividing Integers Course 3 Learn to multiply and divide integers.

  5. 1-6 Multiplying and Dividing Integers Course 3 Insert Lesson Title Here A positive number multiplied by an integer can be written as repeated addition. 3(–200) = –200 + (–200) + (–200) = –600 From what you know about adding and subtracting integers, you can see that a positive integer times a negative integer is negative.

  6. 1-6 Multiplying and Dividing Integers Course 3 Insert Lesson Title Here

  7. 1-6 Multiplying and Dividing Integers Course 3 Additional Example 1: Multiplying and Dividing Integers Multiply or divide. Signs are different. A. –6(4) Answer is negative. = –24 Signs are the same. B. –8(–5) Answer is positive. = 40

  8. 1-6 Multiplying and Dividing Integers –18 –25 –5 2 Course 3 Additional Example 1: Multiplying and Dividing Integers Multiply or divide. C. Signs are different. Answer is negative. = –9 D. Signs are the same. Answer is positive. = 5

  9. 1-6 Multiplying and Dividing Integers Course 3 Check It Out: Example 1 Multiply or divide. Signs are different. A. 5(–2) Answer is negative. = –10 Signs are the same. B. –3(–2) Answer is positive. = 6

  10. 1-6 Multiplying and Dividing Integers –24 –12 –2 3 Course 3 Check It Out: Example 1 Multiply or divide. C. Signs are different. Answer is negative. = –8 D. Signs are the same. Answer is positive. = 6

  11. 1-6 Multiplying and Dividing Integers Remember! Order of Operations 1. Parentheses 2. Exponents 3. Multiply and divide from left to right. 4. Add and subtract from left to right. Course 3

  12. 1-6 Multiplying and Dividing Integers Course 3 Additional Example 2: Using the Order of Operations with Integers Simplify. A. 3(–6 – 12) Subtract inside the parentheses. = 3(–18) Think: The signs are different. = –54 The answer is negative. B. –5(–5 + 2) Subtract inside the parentheses. = –5(–3) Think: The signs are the same. = 15 The answer is positive.

  13. 1-6 Multiplying and Dividing Integers Course 3 Additional Example 2: Using the Order of Operations with Integers Simplify. C. –2(14 – 5) Subtract inside the parentheses. = –2(9) Think: The signs are different. = –18 The answer is negative.

  14. 1-6 Multiplying and Dividing Integers Course 3 Check It Out: Example 2 Simplify. A. 2(1 – 8) Subtract inside the parentheses. = 2(–7) Think: The signs are different. = –14 The answer is negative. B. 4(–3 – 8) Subtract inside the parentheses. = 4(–11) Think: The signs are different. = –44 The answer is negative.

  15. 1-6 Multiplying and Dividing Integers Course 3 Check It Out: Example 2 Simplify. C. –3(6 – 9) Subtract inside the parentheses. = –3(–3) Think: The signs are the same. = 9 The answer is positive.

  16. 2-3 Multiplying and Dividing Integers Course 3 The order of operations can be used to find ordered pair solutions of integer equations. Substitute an integer value for one variable to find the value of the other variable in the ordered pair.

  17. 1-6 Multiplying and Dividing Integers Course 3 Additional Example 3: Sports Application A golfer plays 5 holes. On 3 holes, he has a gain of 4 strokes each. On 2 holes, he has a loss of 4 strokes each. Each gain in strokes can be represented by a positive integer, and each loss can be represented by a negative integer. Find the total net change in strokes. 3(4) + 2(–4) Add the losses to the gains. = 12 + (–8) Multiply. = 4 Add. The golfer changed by a total gain of 4 strokes.

  18. 1-6 Multiplying and Dividing Integers Course 3 Check It Out: Example 3 A golfer plays 7 holes. On 3 holes, he has a gain of 3 strokes each. On 4 holes, he has a loss of 3 strokes each. Each gain in strokes can be represented by a positive integer, and each loss can be represented by a negative integer. Find the total net change in strokes. 3(3) + 4(–3) Add the losses to the gains. = 9 + (–12) Multiply. = -3 Add. The golfer changed by a total loss of 3 strokes.

  19. 1-6 Multiplying and Dividing Integers –12(5) –10 Course 3 Insert Lesson Title Here Lesson Quiz: Part I Multiply or Divide. 1. –8(4) –32 2. 6 Simplify. 3. –2(13 – 4) – 18 4. 6(-5 – 3) – 48

  20. 1-6 Multiplying and Dividing Integers Course 3 Insert Lesson Title Here Lesson Quiz: Part II 5. Evin completes 11 transactions in his bank account. In 6 transactions, he withdraws $10. in 5 transaction, he deposits $20. Find the total net change in dollars. $40

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