Square and Square root a number ending in 6
Example 1:
762
Step 1:put down 6
Step 2:Multiply 2 with (7 + 1) = 16 and add 16 +1 = 17.put down 7 and carry 1 .
Step 3:Multiply 7 with (7 + 1) = 56 + carry 1 = 57 put down 57
Answer is 5776
Example 2:
962
Step 1:put down 6
Step 2:Multiply 2 with (9 + 1) = 20 and add 20 + 1 = 21.put down 1 and carry 2 .
Step 3:Multiply 9 with (9 + 1) = 90 + carry 2 = 92 put down 92
Answer is 9216
Example 3:
362
Step 1:put down
Step 2:Multiply 2 with (3 + 1) = 8 and add 8 +1 = 9.put down 9.
Step 3:Multiply 3 with (3 + 1) = 12 put down 12
Answer is 1296
Example 4:
562
Step 1:put down 6
Step 2:Multiply 2 with (5 + 1) = 12 and add 12 +1 = 13.put down 3 and carry 1 .
Step 3:Multiply 5 with (5 + 1) = 30 + carry 1 = 31 put down 31
Answer is 3136