Five 5s to make it 100

There are five 5s. Put any mathematical operator in the equation to make the target number of the equation equal to 100. There are at least 3 ways to make it. If you can make it more than 3 ways, you are a genius.

Nine 4s to make it 2000

There are nine 4s. Put any mathematical operator in the equation to make the target number of the equation equal to 2000. If you can make it more than one way, you are a genius

What are A and C?

A and C are single digit numbers. To make the equation as shown, what should A and C be?

Three 5s to make a target number 1

Using three 5s, you can make equations (as shown) to have target numbers such as 0 and 2. How do you make a target number of 1?

ABCDE!!!!

A^2+B^2+C^2=D^2+E^2

In the equation shown, A, B, C, D, and E are 5 consecutive positive integers. What are they?

ABCDE!!!!!

A five digit number is represented by ABCDE. If we add the number 1 in front of ABCDE, then times 3, the result number will be ABCDE appended by the number 1 (as shown in the figure). What is this five digit number?

1ABCDE

X      3

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ABCDE1

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Send more money!

Janice Dean is a freshman in the University of North Texas. She has spent all the money for the fall semester. She knows that her father is a puzzle fan. So she mails her father a puzzle as shown.

She knew her father should be able to resolve this puzzle easily and mail the MONEY to her. Do you know how much money she will be receiving from her father?

 SEND

+MORE

_______

MONEY

Use the same number 3 times

10+10+10=30

The figure shows the easiest way to get a target number, such as 30, from using a same number 3 times in an equation. Can you use a number 3 times to make a target number 20? The number you choose must be less than 11. You can use any mathematical operator as you want

You should be able to make 3 equations. If you make 4 equations you must be a genius!!!

Math puzzle

There are 10 numbers: 21, 22, 34, 39, 44, 45, 65, 76, 133, and 153. Can you split all the numbers into 2 groups so that the product of all the numbers of these 2 groups are the same?

Ten digits to make 1/2 + 1/2 = 1

Can you arrange the digits 0 through 9 so that they will make the equation 1/2 + 1/2 = 1? There are a lot of ways to accomplish it. The difficulty is to find out all the possibilities.

math puZZle

Can you make a number 37 by using six 6’s with normal mathematical operators?

mATH pUzzle

The math teacher said to his students: “Learn-Practice And Learn-Practice. Keep learning, and you will get all A’s on your report card”. He wrote down an equation: LPNLP x L = AAAAAA (as shown in the figure). He said: each letter represents a distinct number, what are these numbers?

Math magic

As shown in the figure, each letter represents a distinct digit. What are A, B, C, and D?

SpiDer puzzLe

A spider has 8 legs. A dragonfly has 6 legs and 2 pairs of wings. A cicada has 6 legs and one pair of wings. Now we have all 3 kinds and a total of 18 insects in a cage. We have a total of 118 legs and 20 pairs of wings. How many insects do we have of each kind?