1. NUM 28-Feb-16Created by Mr. Lafferty Maths Dept Integers Integers in Context Add /Sub using Thermometer www.mathsrevision.com Add / Sub Mathematically

2. NUM 28-Feb-16Created by Mr. Lafferty Maths Dept Starter Questions www.mathsrevision.com Q1.Calculate Q2.How many euros do I get for £20 if exchange rate is £1  1.5 € Q3.What is the time difference 09:28 and 10:50 Q4.The answer to the question is 90. What is the question.

3. NUM 28-Feb-16Created by Mr. Lafferty Maths Dept www.mathsrevision.com Learning Intention Success Criteria 1.Understand how integers are used in real-life. 1 We are learning how to use integers in context. Integers

4. NUM 28-Feb-16Created by Mr. Lafferty Maths Dept www.mathsrevision.com Integers Definition :An INTEGER is a negative or positive whole number, including 0. e.g.-2, -1, 0, 5, 100 Note : -2.5, -1.2, 23.5 Are NOT INTEGERS Write down 3 places where Integers are used Weather Bank Sea-Level Height

5. NUM 28-Feb-16Created by Mr. Lafferty Maths Department Now try Lifeskills Ex 1 Class Discussion Ch7 (page 60) www.mathsrevision.com Integers

6. NUM 28-Feb-16Created by Mr. Lafferty Maths Dept Negative Numbers www.mathsrevision.com 2 8 24 22 20 14 18 16 12 10 6 4 0 -2 -8 -24 -22 -20 -14 -18 -16 -12 -10 -6 -4 (a) 4 o C up from 12 o C (b) 8 o C down from 10 o C (c) 3 o C up from -2 o C (d) 6 o C down from 2 o C Down -UP + 12 + 4 = 16 10 - 8 = 2 -2 + 3 = 1 2 - 6 = -4

7. NUM 28-Feb-16Created by Mr. Lafferty Maths Department Now try Lifeskills Ex 2 Ch7 (page 62) www.mathsrevision.com Integers

8. NUM 28-Feb-16Created by Mr. Lafferty Maths Dept Starter Questions www.mathsrevision.com Q1.Calculate Q2.How many euros do I get for £10 if exchange rate is £1  1.4 € Q3.What is the time difference 09:45 and 20:30 Q4.The answer to the question is 30. What is the question.

9. NUM 28-Feb-16Created by Mr. Lafferty Maths Dept www.mathsrevision.com Learning Intention Success Criteria 1.To be able to write down mathematically the addition and subtraction of integers. 1 We are learning how to write down mathematically addition and subtraction of integers. Integers Addition & Subtraction

10. NUM 28-Feb-16Created by Mr. Lafferty Maths Dept Negative Numbers www.mathsrevision.com 2 8 24 22 20 14 18 16 12 10 6 4 0 -2 -8 -24 -22 -20 -14 -18 -16 -12 -10 -6 -4 (a)12 + 4 = (b)10 + (-8) = (c) 7 - 10 = Down -UP + 2 -3 16 Start at 12 Go up 4 Start at 10 Go down 8 Start at 7 Go down 10 Rule Adding a negative is the same as subtracting “+ -” = -

11. NUM 28-Feb-16Created by Mr. Lafferty Maths Dept = -4 www.mathsrevision.com (1) 3 - 7 (2) 4 + (-9) (3) -7 - 8 (4) -2 + (-12) (5) -5 - 25 (6) (-8) + (-9) Examples = -5 = -15 = -14 = -30 = -17 Integers Remember Rule !

12. NUM 28-Feb-16Created by Mr. Lafferty Maths Department Now try Lifeskills Ex 3 Ch7 (page 63) www.mathsrevision.com Integers Have you updated your Learning Log ? Are you on Target ? I can ? Mind Map