Patterns
Money
On the Farm
Simple Math
Other
100
(Replace letters with digits and have the answer be true. A,B,C,D and E are all different digits.)
ABCD × E = DCBA
2178 × 4 = 8712
100
At my favorite fruit stand,
an orange costs 18 dollars,
a pineapple costs 27 dollars,
and a grape costs 15 dollars.
Using the same logic, the mango costs this amount.
What is 15 dollars?
100
Two fathers and two sons sat down to eat eggs for breakfast. They ate exactly three eggs, each person had an egg. Please explain this
One of the 'fathers' is also a grandfather. Therefore the other father is both a son and a father to the grandson.
100
Find the result. 7+7x7-7/7x7-7
What is 42.
100
You have a 3 gallon jug and a 5 gallon jug. You need to measure out exactly 7 gallons of water. How can you do it?
What is Fill the 5 gallon jug, pour it into the 3 gallon jug until the 3 gallon is full, leaving 2 gallons in the 5 gallon jug. Now pour the 3 gallon jug out. Pour the remaining 2 gallons from the 5 gallon into the empty 3 gallon jug. Now fill the 5 gallon from the faucet. You now have exactly 7 gallons.
200
There are many numbers that divide 109 with a remainder of 4. List all two-digit numbers that have that property.
What is 15, 21, 35.
200
A dad offered to pay his son $5 for every correct answer on his math test. His son said he would pay his Dad $8 for every incorrect answer. There were 26 questions on the test and no money was exchanged. How did this happen?
What is the son got 16 questions correct and missed 10.
200
There are 72 cows on the farm. The population of cows on the farm doubles every 8 months. How long ago was the population of rabbits less than 10?
What is 2 years ago.
200
Add the following numbers in your head.
Start with 1000.
Add 40
Add 1000
Add 30
Add 1000
Add 20
Add 1000
Add 10
Write down your answer.
What is 4100.
200
You have three bags, each containing two marbles. Bag A contains two white marbles, Bag B contains two black marbles, and Bag C contains one white marble and one black marble.
You pick a random bag and take out one marble.
It is a white marble.
What is the probability that the remaining marble from the same bag is also white?
2/3
300
A book has 500 pages numbered 1, 2, 3, and so on. How many times does the digit 1 appear in the page numbers?
What is 195.
300
A girl bought a dog for $10, sold it for $15, bought it back for $20, and finally sold it for $25. Did the girl make or lose money, and how much did she make or lose?
What is she made $10.
300
A chicken farmer has figured out that a hen and a half can lay an egg and a half in a day and a half. How many hens does the farmer need to produce one dozen eggs in six days?
What is the farmer needs 3 hens to produce 12 eggs in 6 days.
300
Your dad tells you that he will pay you $6.00 an hour for the 6 seconds that you take to wash your hands before dinner.
How much did you make for washing your hands?
What is $0.01.
300
Jake weighs half as much as Joe, and John weighs three times as much as Jake. Together, they weigh 720 pounds. How much does each man weigh?
What is Jake weighs 120 pounds, so Joe weighs 240 pounds and John weighs 360 pounds.
400
Find the sum of the counting numbers from 1 to 25 (including 1 and 25). In other words, if S = 1+2+3+...+24+25, find the value of S.
What is 325.
400
In a stationary store, pencils have one price and pens have another price. Two pencils and three pens costs $0.78. But three pencils and 2 pens cost $0.72. How much does one pencil cost?
What is about $0.09.
400
If 6 apples cost $3.99, how many apples can you buy for $20?
What is 30 apples.
400
A solid, four-inch cube of wood is coated with blue paint on all six sides.
Then the cube is cut into smaller one-inch cubes.
These new one-inch cubes will have either three blue sides, two blue sides, one blue side, or no blue sides. How many of each will there be?
There are 8 with three sides colored, 24 with two sides colored, 24 with one side colored, and 8 with no sides colored.
400
A 40-yard long street has a tree every 10 yards on both sides. How many trees are there?
What is 10, 5 on either side.
500
Suppose today is Tuesday. What day of the week will it be 100 days from now?
What is Thursday.
500
A man spends one fifth of the money in his wallet.
He then spends one fifth of what remains in the wallet.
He spends $36.00 in all. How much money did he have to begin with?
What is $100.
500
Four farmer's sons are all 2 years apart in age. The total of their ages is equal to 28 years. How old is the youngest son?
What is 4.
500
Which expression gives the smallest answer?
5 x 8.012345
6 x 7.012345
7 x 6.012345
9 x 4.012345
What is 9 x 4.012345.
500
What 3 positive numbers give the same result when multiplied and added together?
What is 1, 2, and 3.