How Well Do You Know Short Cuts To Finding Squares

10 Questions | Total Attempts: 107

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How Well Do You Know Short Cuts To Finding Squares - Quiz

Finding squares is most people's nightmare judging by the fact that not everyone is meant to be a math guru. Fortunately there are ways to find squares without the help of a calculator. This means that you will not have to memorize the "magic" keys on your calculator but namely know a trick or two that will stick to your head forever. Take our quiz and see if you can figure those tricks out.


Questions and Answers
  • 1. 
    What are most shortcuts into finding a square based off?
    • A. 

      (a+b) = a^2 + b^2 + 2*a*b

    • B. 

      A^2 + b^2 + 2*a*b

    • C. 

      (a+b)^2= a^2 + b^2 + 2*a*b

    • D. 

      B^2= a^2 + b^2 + 2*a*b

  • 2. 
    What's the first step into finding the square of 2 digit number which ends in 5?
    • A. 

      Multiply the first digit of the number with the next to its number.

    • B. 

      Multiply the last digit of the number with the next to its number.

    • C. 

      Divide the first digit of the number with the next to its number.

    • D. 

      Substract the first digit of the number with the next to its number.

  • 3. 
    What's the second step into squaring any 2 digit number?
    • A. 

      To go down 5 from the answer found on step 1.

    • B. 

      To go up 3 from the answer found on step 1.

    • C. 

      To go down 3 from the answer found on step 1.

    • D. 

      To go down 2 from the answer found on step 1.

  • 4. 
    What is the first step into finding the square of a number between 30 to 79?
    • A. 

      Find how many more or less the given number is from 30.

    • B. 

      Find how many more or less the given number is from 50.

    • C. 

      Find how many more or less the given number is from 70.

    • D. 

      Find how many more or less the given number is from 100.

  • 5. 
    What is the second step into finding the square of a number between 30 to 79?
    • A. 

      Add the number 25 if more than 50 or subtract the number from 25 if less than 50.

    • B. 

      Subtract the number 25 if more than 50 or add the number from 25 if less than 50.

    • C. 

      Multiply the number 25 if more than 50 or subtract the number from 25 if less than 50.

    • D. 

      Add the number 25 if more than 50 or multiply the number from 25 if less than 50.

  • 6. 
    What's the last step into finding the square of a number between 30 to 79?
    • A. 

      Find the square of the number added or subtracted and put next to the result arrived at in step 2.

    • B. 

      Find the square of the number added or subtracted and put next to the result arrived at in step 1.

    • C. 

      Find the square of the number added and put next to the result arrived at in step 2.

    • D. 

      Find the square of the number subtracted and put next to the result arrived at in step 1.

  • 7. 
    What's the first step into mentally square any number from 20 to 29?
    • A. 

      Add given number and the unit's digit.

    • B. 

      Add 20 to the given number and the unit's digit.

    • C. 

      Add 25 to the given number and the unit's digit.

    • D. 

      Substract given number and the unit's digit.

  • 8. 
    What's the second step into mentally square any number from 20 to 29?
    • A. 

      Tripple the result obtained in step 1

    • B. 

      Double the result obtained in step 1

    • C. 

      Divide the result obtained in step 1 by 10.

    • D. 

      Divide the result obtained in step 1 by 2.

  • 9. 
    What's the third step into mentally square any number from 20 to 29?
    • A. 

      Square the unit's digit of the number given and place it next to the result obtained in step 1.

    • B. 

      Divide the result obtained in step 1 by 10.

    • C. 

      Square the unit's digit of the number given and place it next to the result obtained in step 2.

    • D. 

      Square the unit's digit of the number given and place it next to the result obtained in step 3.

  • 10. 
    What's the second step into finding the square of any number between 10 and 19?
    • A. 

      Square the unit's digit and put the number next to the result obtained in step 1.

    • B. 

      Square the unit's digit and put the number next to the result obtained in step 2.

    • C. 

      Square the unit's digit and put the number next to the result obtained in step 3.

    • D. 

      Double the unit's digit and put the number next to the result obtained in step 1.

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