Say It in Math (2-1)
Undo It (2-2, 2-3)
Both Sides Now (2-4)
Distance Matters (2-5)
Ratios, Letters and Units (2-6, 2-7)
100

Clue: The equation for: a number increased by 9 is 15

Answer: What is n + 9 = 15?

100

Clue: The solution to x - 7 = 12

Answer: What is x = 19?

100

Clue: The solution to 5x = 2x + 12

Answer: What is x = 4?

100

Clue: The value of |-12|

Answer: What is 12?

100

Clue: The solution to x / 6 = 10 / 12

Answer: What is x = 5?

200

Clue: The expression for: five less than a number

Answer: What is n - 5?

200

Clue: The solution to -4x = 32

Answer: What is x = -8?

200

Clue: The solution to 7x - 4 = 3x + 8

Answer: What is x = 3?

200

Clue: The two solutions of |x| = 6

Answer: What are 6 and -6?

200

Clue: The cost of 9 notebooks if 3 notebooks cost $4.50

Answer: What is $13.50?

300

Clue: The equation for: the quotient of a number and 4 is 7

Answer: What is n / 4 = 7?

300

Clue: The first move to solve 3x + 5 = 26, and the final answer

Answer: What is subtract 5 from both sides, x = 7?

300

Clue: The number of solutions of 2x + 6 = 2(x + 3)

Answer: What is infinitely many? (6 = 6 is always true)

300

Clue: The two solutions of |x - 4| = 3

Answer: What are 7 and 1?

300

Clue: y = mx + b, solved for m

Answer: What is m = (y - b) / x?

400

Clue: A taxi charges $3 plus $2 per mile. This equation finds the miles m for a $19 ride, and this is m.

Answer: What is 3 + 2m = 19, m = 8?

400

Clue: The solution to 5(x - 2) = 35

Answer: What is x = 9?

400

Clue: The number of solutions of 4x - 1 = 4x + 5

Answer: What is no solution? (-1 = 5 is false)

400

Clue: The two solutions of 3|x + 1| - 2 = 10

Answer: What are 3 and -5? (|x + 1| = 4)

400

Clue: The number of inches in 3.5 feet

Answer: What is 42 inches? (3.5 x 12)

500

Clue: The number, if twice the sum of a number and 3 is 22

Answer: What is 8? (2(n + 3) = 22)

500

Clue: The solution to (x - 3) / 4 = 5

Answer: What is x = 23?

500

Clue: The solution to 3(x + 4) = 5x - 2

Answer: What is no solution? (-1 = 5 is false)

500

Clue: The number of solutions of |x + 5| = -2, and why

Answer: What is no solution, because absolute value (distance) is never negative?

500

Clue: A runner going 6 meters per second, written in kilometers per hour (1 km = 1,000 m, 1 h = 3,600 s)

Answer: What is 21.6 km per hour?