Algebra Examples

Evaluate 81*3
813
Step 1
Multiply using long multiplication.
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Step 1.1
Multiply 3 by 1. Place the result in the next column in the result line. There is one result line for each digit in 3.
81
3
3
Step 1.2
Multiply 3 by 8. Place the ones digit (4) in the result line and carry the tens digit (2). There is one result line for each digit in 3.
81
3
243
Step 1.3
Add the numbers in each column. In this case, add 3, then place the 3 in the result line.
81
3
243
3
Step 1.4
Add the numbers in each column. In this case, add 4, then place the 4 in the result line.
81
3
243
43
Step 1.5
Add the numbers in each column. In this case, add 2, then place the 2 in the result line.
81
3
243
243
81
3
243
243
Step 2
The result of 813 is 243.
243
 [x2  12  π  xdx ]