Multiply by same two digit number
Q1) 913 * 22
STEP 1 :
First of all multiply unit place digit-
9 1 3 * 2 2
so 3 * 2 = 6 where 2 is carry which we add in next step .
STEP 2 :
Now add last two digit of first number-
9 1 3 * 2 2
1 + 3 = 4
STEP 3:
Now multiply 4 with 2 and add the carry if we have any so -
4 * 2 + = 8
STEP 4 :
Now add first two digit of first number-
9 1 3 * 2 2
9 + 1 = 10
STEP 5:
Now multiply 10 with 2 and add the carry if we have any so -
10 * 2 + = 20
STEP 6 :
Now multiply 9 with 2 -
9 1 3 * 2 2
so 9 * 2 + = 20
Where is carry from previous step.
So the result is
2 0 0 8 6