7th Grade
8th Grade
9th Grade (Algebra)
Bonus: Brain Busters
Bonus: Number Puzzles
100
What is -8 + 15?
7
100
What is (−6) × (−7)?
42
100
Simplify: 4x + 3 − x + 5
3x + 8
100
What is 15% of 80?
12
100
How many seconds are in one hour?
3,600
200
Write the prime factorization of 60.
2² × 3 × 5
200
What is √81 + √49?
16
200
Evaluate 2a² − b when a = 3 and b = 4
14
200
What is 99 × 12? (No calculator!)
1,188
200
What comes next? 2, 6, 12, 20, 30, ___
42
300
Write 45,000 in scientific notation.
4.5 × 10⁴
300
Solve: x/4 − 3 = 5
x = 32
300
Solve: 5x − 7 = 18
x = 5
300
What is the sum of the interior angles of a pentagon?
540°
300
The average of 4 numbers is 15. Three of them are 10, 12, and 20. What is the fourth number?
18
400
What is 2⁻³ written as a fraction?
1/8
400
Multiply and write in scientific notation: (3 × 10⁵)(2 × 10³)
6 × 10⁸
400
Solve: 3(x + 2) = 5x − 8
x = 7
400
A $40 shirt is 25% off. Then 10% tax is added to the sale price. What is the final cost?
$33
400
You roll two dice. What is the probability the sum is 7?
1/6
500
Evaluate: 18 ÷ 3 × 2 + 4² − |−5|
23
500
Solve: 3(x − 2) + 4 = 2x + 7
x = 9
500
Solve for y: 3x + 2y = 12
y = 6 − (3/2)x
500
What is the sum of all whole numbers from 1 to 50?
1,275
500
How many diagonals does a hexagon have?
9
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