Master of Math
A pizza is cut into 8 equal slices. If Sarah eats 1/4 of the pizza and Jim eats 3 slices, how many slices are left?
3 slices (Sarah eats 2 slices; 2 + 3 = 5 eaten; 8 - 5 = 3 left)
In a food chain where a grasshopper eats grass, a frog eats the grasshopper, and a snake eats the frog, what specific consumer level is the snake?
Tertiary consumer / 3rd-level consumer (Grasshopper is primary, frog is secondary, snake is tertiary).
Take the total number of continents on Earth, multiply it by the number of named oceans, and then subtract the number of original American colonies. What is the final number?
22 (7 continents x 5 oceans = 35. 35 - 13 colonies = 22).
Find the volume of a rectangular prism with a length of 5 cm, a width that is double the length, and a height that is half the width.
250 cm³ (Length = 5, Width = 10, Height = 5. Volume = 5 x 10 x 5).
A block of wood has a mass of 60 grams and dimensions of 2 cm by 3 cm by 5 cm. What is the block's exact density?
2 g/cm³ (Volume = 2 x 3 x 5 = 30 cm³. Density = Mass / Volume, so 60 / 30 = 2).
Rearrange the letters of the word "EARTH" to find a vital human organ, then add the letter "Y" to the end to get an adjective meaning warm, robust, or wholesome.
Hearty (EARTH rearranges to HEART + Y = HEARTY).
The average score of four tests is 85. If the scores on the first three tests were 80, 90, and 85, what exact score is needed on the fourth test to keep that average?
85 (Total points needed: 85 x 4 = 340. Current total: 80 + 90 + 85 = 255. 340 - 255 = 85).
A toy car travels 15 meters in 3 seconds, stops completely for 2 seconds, and then travels another 25 meters in 5 seconds. What is its average speed for the whole 10-second trip?
4 meters per second (Total distance = 40 meters. Total time = 10 seconds. 40 / 10 = 4 m/s).
Take the total number of years in a millennium, divide it by the number of years in a decade, and then subtract the number of amendments in the U.S. Bill of Rights. What is the final number?
90 (1,000 years / 10 years = 100. 100 - 10 amendments = 90).
A jacket costs $40. It is on sale for 20% off. When you buy it, a 5% sales tax is added to the sale price. What is the final total cost?
$33.60 (20% off $40 drops it to $32. 5% tax on $32 is $1.60. $32 + $1.60 = $33.60).
Name the three main stages of the water cycle in order: first, where liquid water turns to gas; second, where gas cools into clouds; third, where it falls back to Earth as rain or snow.
Evaporation, Condensation, and Precipitation.
In a leap year, February has 29 days. If February 1st falls on a Tuesday, what day of the week will March 1st be?
Wednesday (February 29th will land on a Tuesday because 28 days is exactly 4 weeks later. March 1st is the very next day).
A rectangle has a perimeter of 30 cm. If the length is exactly twice as long as the width, what is the total area of the rectangle?
50 cm² (Perimeter means Length + Width = 15. If Length is double the Width, Width = 5 cm and Length = 10 cm. Area = 5 x 10).
In genetics, Tall plants (T) are dominant and short plants (t) are recessive. If you cross a heterozygous Tall plant (Tt) with a short plant (tt), what is the percentage chance the offspring will be short?
50% (The cross yields two Tt plants and two tt plants. 2 out of 4 equals 50%).
A farmer looks out at his pen of chickens and rabbits. He counts exactly 10 heads and 28 legs total. How many rabbits does the farmer have?
4 rabbits (4 rabbits have 16 legs, leaving 6 chickens with 12 legs. 16 + 12 = 28 legs, and 4 + 6 = 10 heads)