Slideshow of grade 9 review unit

1. Review unit grade 9

2. Integers +5 -9 Add …… Same sign add the numbers, use the sign -3 + -7 = -10 Different signs subtract the numbers, use the sign of the higher number 3 + -7 = -4

3. Integers +5 -9 Subtract…… Change to add -3 - -7 = -3 + 7 = 4

6. Bedmas Pay close attention to order of operations brackets, exponents ,div and mult, add and subtract { 3 – 5 }2 ÷ 2 – 7 • 2 {-2}2÷ 2 – 7 • 2 4 ÷ 2 – 7 • 2 2 - 14 -12

7. Square Roots √5 2 of the same number multiplied to get what’s under the square root sign √ 144 = 12 Because 12 • 12 = 144

8. Geometry Finding angle measures Angle measure of a straight line = 180° Opposite angles are = 148 32 32