Multiply n numbers by 2 digit (moving multiplier) 4 digit X 2 digit
Step 1: Multiply unit digit by unit digit
Step 2: multiply unit and tens place diagonally and add
Note :(move multiplier 1 step to left)
Step 3: multiply tens place and hundreds place diagonally and add
Step 4: multiply hundreds place and thousands place diagonally and
Step 5: multiply extreme left nos.
Example 1:
6213 X
42
6
14 6
9 14 6
Step 4: multiply tens place and hundreds place diagonally and add
20 9 14 6
26 20 9 14 6
Final answer will be 260946
Example 2:
5214 X
62
8
26 8
12 26 8
23 12 26 8
3223 12 26 8
The final answer will be 323268
Example 3:
5321 X
22
2
6 2
10 6 2
1710 6 2
111710 6 2
The final answer will be 117062