Brain Teasers
Fractions
Calculate Tip (20%)
Rounding Decimals
Random Trivia
100

This is full of holes but still holds water

What is a sponge

100

Solve and simplify (if possible): 4/5 + 1/3

What is 17/15

100

At a restaurant, the total for your meal comes to $36. The amount of tip you owe is _______

(Remember to round to the nearest hundredth!)

What is $7.20

100

Round 1.198 to the nearest whole number

What is 1


100

In spite of its name, this is the smallest country in the world

What is the Vatican City

200

This invention lets you look right through a wall

What is a window

200

Solve and simplify (if possible):  13/20 - 9/16

What is 7/80

200

After watching Ratatouille, you go to Auguste Gusteau's for dinner. You eat some delicious food and the bill comes to $119.54 . Even though tip is not expected in France, your service was so good you decide to give the 20%. The amount of tip you give is _______

(Remember to round to the nearest hundredth!)

What is $23.91

200

Round 16.835 to the nearest hundredth

What is 16.84

200

The name for a glob of toothpaste on a toothbrush. It is also the name of a microplastic bead

(Hint: Nerd emoji + wordle) 

What is a nurdle

300

This kind of a room doesn't have any walls or doors

What is a mushroom

300

Which is larger:  5/8  or  3/5

What is 5/8

300

The total cost for your meal comes to $53.96 . You leave a ten dollar bill and two one dollar bills as a tip. Did you tip enough?

What is yes

300

Round 27.29983 to the nearest thousandth

What is 27.300

300

This is the only letter that does NOT appear in the name of any U.S. state

What is Q

400

The numbers 11, 88, and 96 all have this in common

What is they are all read the same upside down

400

Which is smallest:  3/4,  2/3  or  7/12

What is 7/12

400

You and 3 of your friends go out for lunch together. While everyone pays for their own meal, you offer to cover the tip for the whole table (everyone's orders). The bill for each person is $11.38, $9.00, $17.82, and $23.45 . The amount of tip you should give is __________

(Remember to round to the nearest hundredth!)

What is $12.33

400

Round 106.708504 to the nearest tenth

What is 106.7

400

This game introduced the character Bowser Jr.

What is Super Mario Sunshine

500

Ashley is 15 and her mother is 37. Now her mother is twice her age, Ashley is ____ years old. 

What is 22 years. (Her mother is 22 years older than her so when Ashley is 22 her mother is 44.) 

2 x 22= 44

500

A recipe calls for half of three fourth cups of sugar. Write that amount in fractional form

What is 3/8

500

Spongebob, Patrick, and Sandy go to the Chum Bucket out of pity for Plankton. They eat the subpar food and their total comes to $74.27. Patrick offers to pay the tip, but he only leaves a five dollar bill, two quarters, and three pennies on the table. If Spongebob wants to make sure the correct tip amount is paid, he should add this much more to Patrick's tip.

(Remember to round to the nearest hundredth!)

What is $9.32

500

Round 3.1415926535 to the nearest ten-thousandth

What is 3.1416

500

In Switzerland, it is illegal to own just one of these domestic rodents. You must have at least two because they are social animals, otherwise it is considered animal abuse.

What are guinea pigs