JHS 2 Review

Algebra

100

TRIPLE POINTS!!!

Simplify the following expression: 

-6xy(x² - 5ay)

-6x³y + 30ay²

200

Simplify the following expression:

(x+2y) + 3(2x-4y)

7x - 10y

300

Simplify the following expression:

8x x 3xy / 4y

6x²

400

DOUBLE POINTS!!!

Simplify the following expression:

-32x³y²/(-2x)²/(-2xy)

NOTE: / means divide

4y

500

50x²y / 5xy² / (1/6)x³

60/x²y

Simultaneous Equations + Linear Equations

100

Solve for x and y:

x + y = 6

2x + 3y = 14

x = 8 , y = 2

200

DOUBLE POINTS!!!

Solve for x and y:

5x + 3y = 4

3(x - y) = 2x + 8

x = 2 , y = -2

300

DOUBLE POINTS!!!

Solve the following simultaneous equations:

0.01x − 0.02y = 0.12

x + 0.1y = 1.5

x = 2 , y = -5

400

Find the function of the line that is parallel to 

y = -4x + 1 and goes through the point (-3,1).

y = -4x - 11

500

Find the intersecting points of the following:

y = 6x + 4 and y = -2x + 10

(3/4, 17/2)

Shapes and Figures

100

Name the shape: A quadrilateral that has equal side lengths and angles that are 90 degrees. 

Square

200

Angles in a straight line add to equal ______ degrees.

180

300

Exterior angles of ANY polygon always add to equal ________ degrees. 

360 degrees

400

In a right-angled isosceles triangle, what are the sizes of all the angles? 

90, 45, 45 

500

Find the size of interior angles in an 8 sided shape.

135 degrees

Probability + Box and Whisker

100

What is the formula for finding the Interquartile Range (IQR)?

Q₃ - Q₁

200

Find the probability of rolling an odd number twice on a regular 6-sided dice. 

P(odd twice) = 1/4

300

Find Q1, Q2 and Q3 of the following dataset:

3,5,8,8,9,11,12,12,13,13,16

Q₁ = 8

Q₂ = 11

Q₃ = 13

400

DOUBLE POINTS!!!

I have to choose 2 different jellies from 5 types: apple, orange, grape, peach and mango. How many total outcomes are possible? 

10

500

DOUBLE POINTS

There are 4 cards numbered 3, 5, 6 and 9. They are shuffled carefully, then one card is taken out at a time, three times in a row and arranged left to right to form a 3-digit integer. Find the probability that the integer is a multiple of 3. 

You have 2 minutes for this problem. 

P (multiple of 3) = 1/4

G9 Unit 1

100

TRIPLE POINTS!!!

Expand and simplify the following:

(x+7)(x-8)

x² - x - 56

200

Expand and simplify the following: 

(3 + x)(3 - x)

9 - x²

300

Expand and simplify the following: 

(2x+4)(6y-x)

12xy - 2x² + 24y - 4x

400

Expand and simplify the following:

(x/4 - 5)(x/4 + 5)

(x²/16 - 25)

500

Expand and simplify the following:

(x-y+5)(x-y+6)

x² - 2xy + 11x + y² - 11y + 30