Friday, October 17, 2014

Math Multiplication Tricks - I

Trick 1: Number below 10
Step1:
Think of a number below 10.
Step2:
Double the number you have thought.
Step3:
Add 6 with the getting result.
Step4:
Half the answer, that is divide it by 2.
Step5:
Take away the number you have thought from the answer, that is, subtract the answer from the number you have thought.
Answer: 3 


Trick 2: Any Number

Step1:
Think of any number.
Step2:
Subtract the number you have thought with 1.
Step3:
Multiply the result with 3.
Step4:
Add 12 with the result.
Step5:
Divide the answer by 3.
Step6:
Add 5 with the answer.
Step7:
Take away the number you have thought from the answer, that is, subtract the answer from the number you have thought.
Answer: 8


Trick 3: Any Number

Step1:
Think of any number.
Step2:
Multiply the number you have thought with 3.
Step3:
Add 45 with the result.
Step4:
Double the result.
Step5:
Divide the answer by 6.
Step6:
Take away the number you have thought from the answer, that is, subtract the answer from the number you have thought.
Answer: 15


Trick 4: Same 3 Digit Number

Step1:
Think of any 3 digit number, but each of the digits must be the same as. Ex: 333, 666.
Step2:
Add up the digits.
Step3:
Divide the 3 digit number with the digits added up.
Answer: 37


Trick 5: 2 Single Digit Numbers

Step1:
Think of 2 single digit numbers.
Step2:
Take any one of the number among them and double it.
Step3:
Add 5 with the result.
Step4:
Multiply the result with 5.
Step5:
Add the second number to the answer.
Step6:
Subtract the answer with 4.
Step7:
Subtract the answer again with 21.
Answer: 2 Single Digit Numbers.


Trick 6: 1, 2, 4, 5, 7, 8

Step1:
Choose a number from 1 to 6.
Step2:
Multiply the number with 9.
Step3:
Multiply the result with 111.
Step4:
Multiply the result by 1001.
Step5:
Divide the answer by 7.
Answer: All the above numbers will be present.


Trick 7: 1089

Step1:
Think of a 3 digit number.
Step2:
Arrange the number in descending order.
Step3:
Reverse the number and subtract it with the result.
Step4:
Remember it and reverse the answer mentally.
Step5:
Add it with the result, you have got.
Answer: 1089


Trick 8: x7x11x13

Step1:
Think of a 3 digit number.
Step2:
Multiply it with x7x11x13.
Ex: Number: 456, Answer: 456456


Trick 9: x3x7x13x37

Step1:
Think of a 2 digit number.
Step2:
Multiply it with x3x7x13x37.
Ex: Number: 45, Answer: 454545


Trick 10: 9091

Step1:
Think of a 5 digit number.
Step2:
Multiply it with 11.
Step3:
Multiply it with 9091.
Ex: Number: 12345,Answer:1234512345

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