Quick Arithmetic
Kyle, Kate and Kendall split the cost of a pizza evenly between the three of them. If Kyle paid $3.24, what was the total cost of the pizza?
Answer: 9.72 (dollars) or
9 dollars, 72 cents
A grocery bag can hold up to 8 pounds of potatoes. What is the least number of bags needed to hold 50 pounds of potatoes?
Answer: 7 (bags)
According to a nursery rhyme recipe, 24 blackbirds were to be baked in a pie. But due to a blackbird shortage, the baker cut the recipe to make the pie filling three-fourths the normal volume. How many fewer blackbirds were needed?
Answer: 6 (blackbirds)
Allergy shots cost Kyle $3 each. If he gets one shot twice per calendar month, how many dollars does it cost for one year of shots?
Answer: 72 (dollars)
If the area of a square is 36 square units, then half the square’s perimeter is how many units?
Answer: 12 (units)
What is the value of the expression 2^4 + 2^4 + 2^4 + 2^4?
(2^4 is 2 x 2 x 2 x 2 or "two to the power of four")
Answer: 64
Starting with the third term in the sequence 1, 5, 6, 11, 17, …, each term is the sum of the previous two terms in the sequence. What is the seventh term in the sequence?
Answer: 45
Gina has five pairs of white socks, three pairs of black socks and two pairs of red socks. What percent of her socks are red?
Answer: 20 (percent)
How many more cents per item is “3 items for $10” than “2 items for $5?” Express your answer to the nearest whole number.
Answer: 83 (cents or
cents per item)
How many perfect squares less than 100 have a tens digit of 6?
Answer: 1 (square) [The square is 64]
What is the smallest multiple of 6 greater than 115?
Answer: 120
Cory made a complete list of the prime numbers between 1 and 25. What is the sum of the smallest prime number and the largest prime number on his list?
Answer: 25
What is the value of a/b - b/a if a = 5 and b = 2? Express your answer as a decimal to the nearest tenth.
Answer: 2.1
The earth rotates at a constant rate and rotates 360 degrees in one day. How many degrees does it rotate in one hour?
Answer: 15 (degrees)
A play has three acts that are 80 minutes, 50 minutes and 45 minutes long, respectively. There are also two 15-minute intermissions. If the play starts at 5:30 p.m., at what time does it end?
Answer: 8:55 (p.m.)
What is the value of the expression –7 + 3 × 2 x 2 x 2 – 6 ?
Answer: 11
What is the smallest positive perfect square that is divisible by both 2 and 3?
Answer: 36
Square tiles measuring 4 inches on each side will be used to tile a 1-foot by 1-foot area. How many of these tiles are needed? (There are 12 inches in a foot)
Answer: 9 (tiles)
Karen drove continuously from 9:40 a.m. until 1:20 p.m. of the same day and covered a distance of 165 miles. What was her average speed in miles per hour?
Answer: 45 (miles per hour)
Jo is thinking of a positive integer less than 100. It is one less than a multiple of 8, and it is three less than a multiple of 7. What is the greatest possible integer Jo could be thinking of?
Answer: 95
What is the remainder when 2007 is divided by 25?
Answer: 7
What is the smallest prime that is 10 less than a perfect square?
Answer: 71
One-sixth of one-third of one-fourth of what number is equal to five?
Answer: 360
Julie eats 3 granola bars every 24 hours while Kirsten eats 2 granola bars every 12 hours. What percent fewer granola bars per hour does Julie eat?
Answer: 25 (percent)
If x@y = xy – 2x, what is the value of (5@3) - (3@5)?
Answer: -4