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Integers

Integers. Add / Subtract Integers. Double Negatives. Multiply +ve / -ve Integers. www.mathsrevision.com. Divide by +ve or -ve Integers. Starter Questions. www.mathsrevision.com. Integers. Addition & Subtraction. Learning Intention. Success Criteria.

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Integers

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  1. Integers Add / Subtract Integers Double Negatives Multiply +ve / -ve Integers www.mathsrevision.com Divide by +ve or -ve Integers Created by Mr. Lafferty Maths Dept.

  2. Starter Questions www.mathsrevision.com Created by Mr. Lafferty Maths Dept.

  3. Integers Addition & Subtraction Learning Intention Success Criteria • To remember rules for adding and subtract both positive and negative numbers. • 1. We are learning how to add positive and negative numbers . www.mathsrevision.com • 2. To apply rules to simple questions. Created by Mr. Lafferty Maths Dept.

  4. 4 3 2 1 0 -1 -2 -3 Think Thermometer Integers Addition & Subtraction 1 + 3 = 4 4 - 5 = -1 www.mathsrevision.com -3 + 5 = 2 -1 - 2 = -3 Created by Mr. Lafferty Maths Dept.

  5. Integers Addition & Subtraction Now try Exercise 3 Ch2 (page 14) www.mathsrevision.com Created by Mr. Lafferty Maths Dept.

  6. Starter Questions www.mathsrevision.com Created by Mr. Lafferty Maths Dept.

  7. Integers Addition & Subtraction Learning Intention Success Criteria • To understand the ‘double negative’ rule for numbers. • 1. We are learning how to work with the ‘double negative’ for numbers. • 2. To simplify and solve problems using the ‘double negative’ property. www.mathsrevision.com Created by Mr. Lafferty Maths Dept.

  8. Rule “Double negative make a positive” - - = + Integers Addition & Subtraction Double Negative 1 - (- 2) = 1 + 2 = 3 - 4 – (- 5) = - 4 + 5 = 1 www.mathsrevision.com -3 - (- 5) = - 3 + 5 = 2 -1 - (- 10) = -1 + 10 = 9 Created by Mr. Lafferty Maths Dept.

  9. Integers Addition & Subtraction Now try Exercise 4 Ch2 (page 15) www.mathsrevision.com Created by Mr. Lafferty Maths Dept.

  10. Starter Questions www.mathsrevision.com Created by Mr. Lafferty Maths Dept.

  11. Integers Multiplication Learning Intention Success Criteria 1. Understand how to multiply positive and negative numbers. • 1. We are learning how to multiply positive and negative numbers. www.mathsrevision.com Created by Mr. Lafferty Maths Dept.

  12. With your partner can try and come up with the rules for multiplying integers (+ve) x (+ve) = (+ve) (-ve) x (–ve) = (+ve) (-ve) x (+ve) = (-ve) (+ve) x (–ve) = (-ve) Integers Multiplication Multiplying Integers 2 1 x (-2) = -2 (-2) x (-1) = -20 (-4) x 5 = (- 2) x (-5) = 10 www.mathsrevision.com -9 (-3) x 3 = 25 (-5) x (-5) = Same signs = positive answer Different signs = negative answer 32 (-4) x (-8) = -40 5 x (-8) = Created by Mr. Lafferty Maths Dept.

  13. Integers Multiplication Now try MIA Ex 13.1 Ch1 (page 24) www.mathsrevision.com Created by Mr. Lafferty Maths Dept.

  14. Starter Questions 20o www.mathsrevision.com xo xo Created by Mr. Lafferty Maths Dept.

  15. Integers Division Learning Intention Success Criteria • 1. We are learning how to divide by positive and negative numbers. 1. Understand how to divide positive and negative numbers. 1. Apply rules to simple number questions. www.mathsrevision.com Created by Mr. Lafferty Maths Dept.

  16. Integers MNU 2-04a MNU 3-03b MNU 3-04a Division Now try MIA Ex 14.1 Ch1 (page 25) www.mathsrevision.com Created by Mr. Lafferty Maths Dept.

  17. With your partner can try and come up with the rules for multiplying integers (+ve) ÷ (+ve) = (+ve) (-ve) ÷ (–ve) = (+ve) (-ve) ÷ (+ve) = (-ve) (+ve) ÷ (–ve) = (-ve) Integers Division (-2) ÷ 1 = -2 (-2) ÷ (-1) = 2 4 20 ÷ (-5) = -4 (- 20) ÷ (-5) = Same signs = positive answer Different signs = negative answer www.mathsrevision.com -3 (-9) ÷ (-3) = (-9) ÷ 3 = 3 -5 5 (-25) ÷5 = (-40) ÷ (-8) = Created by Mr. Lafferty Maths Dept.

  18. Integers Division Now try MIA Ex 14.1 Ch1 (page 25) www.mathsrevision.com Created by Mr. Lafferty Maths Dept.

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