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Popular 100

Problem #62
Deadline to submit the solution: February 28th , 2002

Write 100 using the following with arithmetic signs and parentheses:

Q1. Five ones

Q2. Five fives

Q3. Five threes

 

Solutions

 

Sammy from USA
Grade: 4 Age: 9
Solution:
Q1: 111-11=100
Q2: [5x5x5]-5x5=100
Q3: [33x3]+3/3=100

On question No.1 you first use three ones to make 111. Then you use the other two ones to make 11 and subtract 111 from 11 and get 100.
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On question No.2 you multiply 5x5x5 and get 125. then you multiply the other two fives and get 25. then you subtract 125 from 25 and get 100
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On No.3 you multiply 33x3 and get 99. then divide 3 from 3 which equals 1. then add them together to get 100.
About me: I am from Pittsburgh and I LLLLLLLLLLLLOOOOOOOOOVVVVVVVVEEEEEEE cars and reading. I like video games too. My favorite subjet is math.
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Phillip from United States
Grade: 5 Age: 10
Solution:
Q1: 111-11=100
Q2: (5x5)x5-(5x5)=100
Q3: 3x33+3/3=100

Q1:I subtracted 11 from 111 and got 100. Q2:I multiplied 5 and 5 to get 25 and multiplied 25 to 5 in order to get 125. 125 subtracting 25(5x5) would equal 100. Q3:I multiplied 3 with 33 and got an answer of 99. 100-99=1 In order to get 1, I used the fraction 3 out of 3 which is 1. 99+1=100
About me: Ever since 2nd grade I liked to answer math questions as well as create narratives about myself. I have always enjoyed collecting creepy crawly things such as insects and invertibrates. I received a coin collection from my mother and collect coins from around the world.



                


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