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Integer practice (multiply and divide) ppt
This document discusses integers and the rules for multiplying and dividing integers. It defines an integer as a positive or negative whole number including 0. It provides examples of integers ranging from -3 to 3. It then explains the rules for multiplying integers: the product of two integers with the same sign is positive, while the product of two integers with different signs is negative. These same rules apply to dividing integers. The document provides examples of multiplying and dividing integers to demonstrate applying the rules.
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Integer practice (multiply and divide) ppt
- 1. INTEGERSINTEGERS By: Andrea Bonde& Slideshare.net
- 2.
- 3. • An integeris a positive or negative whole number, including 0. …-3, -2, -1, 0, 1, 2, 3… Whole Number: Any number over 1.
- 4. Rules for Multiplying Integers(x) • The product of two integers with the same signs is POSITIVE. • The product of two integers with different signs is NEGATIVE.
- 5. Rules Summary for Multiplication •Positive x Positive = Positive • Negative x Negative = Positive • Positive x Negative= Negative • Negative x Positive = Negative
- 6. Let’s Practice “Multiplication” 1)7 x (-3) = 2) 4 x 3 = 3) -5 x 5 = 4) -7 x (-2) = 5) -8 x (-8) = -21 12 -25 14 64 Remember: Positive x Positive = Positive Negative x Negative = Positive Positive x Negative= Negative Negative x Positive = Negative
- 7. Let’s Practice “Multiplication” 1)6 x (-4) = 2) 3 x 2 = 3) -4 x 4 = 4) -6 x (-1) = 5) -7 x (-7) = -20 6 -16 6 49 Remember: Positive x Positive = Positive Negative x Negative = Positive Positive x Negative= Negative Negative x Positive = Negative
- 8. Did you knowthat the rules for multiplication and division are the same?
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- 10. The rules fordivision are exactly the same as those for multiplication. If we were to take the rules for multiplication and change the multiplication signs to division signs, we would have an accurate set of rules for division.
- 11. Rules for Dividing Integers(÷) • The quotient of two integers with the same signs is POSITIVE. • The quotient of two integers with different signs is NEGATIVE.
- 12. Rules Summary for Division •Positive ÷ Positive = Positive • Negative ÷ Negative = Positive • Positive ÷ Negative= Negative • Negative ÷ Positive = Negative
- 13. Let’s Practice “Division” 1)16 ÷ (-2) = 2) -42 ÷ (-6) = 3) -18 ÷ 9 = 4) 40 ÷ 8 = 5) 20 ÷ (-5) = -8 7 -2 5 -4 Remember: Positive ÷ Positive = Positive Negative ÷ Negative = Positive Positive ÷ Negative= Negative Negative ÷ Positive = Negative
- 14. Let’s Practice “Division” 1)18 ÷ (-9) = 2) -48 ÷ (-8) = 3) -27 ÷ 3 = 4) 64 ÷ 2 = 5) 30 ÷ (-6) = -2 8 -9 32 -5 Remember: Positive ÷ Positive = Positive Negative ÷ Negative = Positive Positive ÷ Negative= Negative Negative ÷ Positive = Negative
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- 16. What is aninteger?
- 17. ANSWER • An integeris a positive or negative whole number, including 0.
- 18. Can you givean example of an integer?
- 19. ANSWER • …-3, -2,-1, 0, 1, 2, 3…
- 20. When signs arethe same you?
- 21. ANSWER • Add thenumbers • Answer gets sign of the larger number.
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- 23. ANSWER • You subtractthe numbers • Answer gets sign of the larger number.
- 24. How do youmultiply integers?
- 25. ANSWER • If thesigns are the same, your answer is always positive. • If the signs are different, your answer is always negative.
- 26. How do youdivide integers?
- 27. ANSWER • If thesigns are the same, your answer is always positive. • If the signs are different, your answer is always negative. *Multiplication and Division Rules are the same!