Algebra
Simplify 2x + 3x
5x
What is the sum of the interior angles of a triangle?
180°
Simplify 12/16
3/4
A coin is flipped once. What is the probability of getting heads?
1/2
A book costs $12. If you buy 4 books, you get a 25% discount on the total price. How much do you pay?
$36
Solve 2x +5 = 15
5
The radius of a circle is 7 cm. Find its diameter.
14 cm
Convert 0.75 into a fraction
3/4
A die is rolled. What is the probability of rolling an even number?
3/6 = 1/2
A train travels 90 km in 1.5 hours. At this speed, how far will it travel in 4 hours?
240km
Expand (x+4)(x-2)
x2 + 2x -8
Find the area of a rectangle with length 8 cm and width 5 cm.
40 cm²
Add 2/3 + 1/6
5/6
In a class, 12 students like soccer and 8 like cricket. If one student is chosen at random, what is the probability they like cricket?
8/20 = 2/5
A shirt costs $40. During a sale, it is discounted by 20%. Afterward, sales tax of 10% is added. What is the final price?
$35.2
Solve 3(x-2) = 2x +7
x=13
A triangle has sides 3 cm, 4 cm, and 5 cm. Is it a right triangle?
Yes (because 32+42=52)
Divide 5/8 ÷ 2/3
15/16
Find the mean of: 4, 8, 10, 14
9
A rectangle has a perimeter of 60 cm. Its length is twice its width. Find the area of the rectangle.
Length = 20 cm, width = 10 cm, area = 200 cm²