Algebra & Patterns
Solve: x + 7 = 15
x = 8
Simplify: 12/18
2/3
Triangle angles: 50° and 60°, find missing
70°
12 ÷ 3 + 5 = ?
9
Next pattern: 5, 10, 20, 40, …
80
Next in sequence: 2, 4, 8, 16, …
32
0.75 as a fraction
3/4
Perimeter of rectangle: 7 × 4
22
A pen costs $2.50, how much for 6 pens?
$15
Mini Sudoku 4×4
Depends on mini Sudoku
Solve: 3x − 5 = 16
x = 7
Ratio problem: 2 red : 3 blue, total 25 balls, how many red?
10 red
Area of triangle: base 6, height 5
15
Share $48 among 4 friends, how much each?
$12
I am a 2-digit number. Digits sum = 9, number < 50. What am I?
18
Find the missing number: 5, 11, 17, …
23
Add: 3/4 + 5/8
1 3/8
Find the missing side of a right triangle: 3² + ?² = 5²
4
Train travels 60 km/h for 2 hours, distance?
120 km
Magic square: fill missing number in 3×3
Depends on magic square
Solve: 2(x + 3) = 18
x = 6
Subtract: 7/10 − 2/5
3/10
Symmetry: How many lines of symmetry in a regular hexagon?
6
A box has 24 marbles, 2/3 are red, how many red?
16 red
Riddle: I am a number < 50. Divide by 4 → remainder 3. What number?
7, 11, 15, 19, 23, 27, 31, 35, 39, 43, 47 → correct answer 3, 7, 11… depending on which one fits remainder 3