1. Starter Questions 1. Calculate 85% of 160 2. Calculate a) -2 + 6b) -3 – 5c) 6 + (-4) 3. Describe how you would express ⅝ as a percentage. 4. Bill and his 6 friends go out for a meal. The bill comes to £86.59 They decide to split the bill equally. How much should each person pay?

2. Integers Learning Intentions To understand how to subtract negative numbers Integers Learning Intentions To understand how to subtract negative numbers

3. We can use a number line to help us add positive and negative integers. –7 + 3 = -7-4 = -4 To add a positive integer we move forwards up the number line. Integers

4. We can use a number line to help us add positive and negative integers. 2 - 5 = 2-3 = -3 To subtract a positive integer we move backwards down the number line. Integers

5. We can use a number line to help us add positive and negative integers. To add a negative integer we move backwards down the number line. –3 + (–4) = = –7 -3-7 –3 + –4is the same as–3 – 4 Integers

6. We can use a number line to help us subtract positive and negative integers. -4 – (-5) = -4 1 = 1 To subtract a negative integer we move forward up the number line. Integers –4 – (–5)is the same as–4 + 5

7. We can use a number line to help us subtract positive and negative integers. –4 – (–7) = -43 = 3 To subtract a negative integers we move forwards up the number line. –4 – (–7)is the same as–4 + 7 Integers

8. Now try Ex 9.6 Pg 87 Ch 9 Integers

9. Integers Learning Intentions To understand how to subtract negative numbers