Mental Math
The sum of 0.75 & 1/2.
What is 5/4 or 1 1/4 or 1.25?
The total cost of a $20 meal with a 15% tip.
What is $23?
The next number in the pattern: 1, 4, 9, 16, __.
What is 25?
The product of -6 and -7.
What is 42?
The original price of an item if it costs $90 after a 10% discount.
What is $100?
The mystery number: "I am a prime number greater than 10 but less than 20."
What is 11, 13, 17, or 19?
The value of 52 + 43.
What is 89?
A bag has 5 red, 3 blue, and 2 green marbles. What’s the chance of picking blue?
What is 0.3 or 3/10?
The value of x in the equation 4x - 3 = 13.
What is 4?
The decimal equivalent of 3/8.
What is 0.375?
The number of hours it would take to drive 240 miles at a speed of 60 miles per hour.
What is 4 hours?
The missing angle in a triangle where the other two angles are 35° and 65°.
What is 80 degrees?
The result of 4! (4 factorial).
What is 24?
The best deal between a 30% discount or a $60 off coupon on a $160 item.
What is $60 off?
The total number of handshakes in a room of 8 people if everyone shakes hands exactly once with each other.
What is 28?