Gr.9 - 1
Simplify: (5x + 2) + (3x - 4).
What is 8x - 2
What is 50% of 80?
What is 40?
The perimeter of a shape is found by doing this mathematical operation (add, subtract, etc) on all its sides.
What is addition?
10% of what number is 5?
What is 50?
You have a $20 bill, 3 quarters, and 4 dimes. How much money do you have in total?
What is $20.95?
(20.00 + (3 × 0.25) + (4 × 0.10) = 20.95)
Combine the like terms: (7x² + 4x + 1) + (3x² - 2x - 5).
What is 10x² + 2x - 4?
Find 30% of 200.
What is 60?
A rectangle has sides x + 4 and 2x - 3. Write an expression for its perimeter.
What is 2 (x + 4 + 2x - 3)
= 6x + 2?
25% of what number is 80?
What is 320?
A 12-pack of soda costs $6.00. How much does each can cost?
What is $0.50?
(6.00 ÷ 12 = 0.50 per can)
If a polynomial is written as 4x² + 3x - 6, which term represents the constant?
What is -6?
A student scored 85% on a test with 40 questions. How many did they get right?
What is 34?
(85% of 40 = (85/100) × 40 = 34)
A triangle has sides 3x + 1, 2x - 5, and x + 7. Find its perimeter.
What is 6x + 3?
(P = (3x + 1) + (2x - 5) + (x + 7)
A $50 item is increased by 10%. What is the new price?
What is $55?
(10% of 50 = 5, so 50 + 5 = 55)
A large pizza is cut into 8 slices. If you eat 3 slices, what fraction of the pizza did you eat?
What is 3/8?
The sum of 2x² + 5x + 1 and x² - 3x - 4 is:
What is 3x² + 2x - 3?
A meal costs $48 before tax. If HST is 15%, how much is the tax?
What is $7.20? (15% of 48 = 7.20)
A triangle has sides x² + 2x - 3, 2x² - 4x + 5, and x² - x - 2. Find its perimeter.
What is 4x² - 3x?
The price of a video game went from $80 to $96. What is the percent increase?
What is 20%?
Gas costs $1.70 per litre. You want to buy 30 litres. How much will it cost before tax?
What is $51.00?
(1.70 × 30 = 51.00)
If a rectangle’s length is 2x + 5 and its width is x - 3, find the polynomial representing its perimeter.
What is 6x + 4?
(P = 2(l + w) = 2(2x + 5 + x - 3) = 2(3x + 2) = 6x + 4)
A jacket originally cost $120. It is on sale for 25% off. What is the sale price?
What is $90?
(120 - 25% of 120 = 120 - 30 = 90)
A runner completes a triangular path with side lengths x + 4, 2x - 1, and x + 2. What expression represents the total distance run?
What is 4x + 5?
A store increased the price of a laptop from $1,200 to $1,500. What is the percent increase?
What is 25%?
You live in Newfoundland time (NST) and want to call a friend in British Columbia (Pacific Time - PT). If it’s 9:15 PM in Newfoundland, what time is it in British Columbia? (Hint:NL is 4.5 hours ahead of BC).
What is 4:45 PM?