MULTIPLICATION SHORT CUT METHODS

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• MULTIPLICATION SHORT CUT METHODS UP 100 X 100 FOR ALL EXAMS AND CHILDREN 

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Square a 2 Digit Number Ending in 5

For this example we will use 25

• Take the "tens" part of the number (the 2 and add 1)=3

• Multiply the original "tens" part of the number by the new number (2x3)

• Take the result (2x3=6) and put 25 behind it. Result the answer 625.

Try a few more 75 squared ... = 7x8=56 ... put 25 behind it is 5625.

55 squared = 5x6=30 ... put 25 behind it ... is 3025. Another easy one! Practice it on paper first!

SINGLE STEP: 35 square
(3x[3+1]) / (5x5) = 12 / 25 = 1225

Square 2 Digit Number: UP-DOWN Method