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How to you Squaring a number ending in 6

Debraj Paul
19/03/2017 0 0

Ex [1]
66^2 =_________.
a) Write down 6.
b) 2 x (6 + 1) + 1 = 15. Write 5, carry *1.
c) 6 x (6 + 1) = 42 + *1 = 43. Write 43.
d) The answer is 4356.

Ex [2]
86^2 =_________.
a) Write down 6.
b) 2 x (8 + 1) + 1 = 19. Write 9, carry *1.
c) 8 x (8 + 1) = 72 + *1 = 73. Write 73.
d) The answer is 7396.

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