# Evaluate 0.30*100 0.3⋅100
Multiply using long multiplication.
Multiply 0 by 0. Place the result in the next column in the result line. There is one result line for each digit in 100.
 0 .3 0 ⨯ 1 0 0 0
Multiply 0 by 3. Place the result in the next column in the result line. There is one result line for each digit in 100.
 0 .3 0 ⨯ 1 0 0 0 0
Multiply 0 by 0. Place the result in the next column in the result line. There is one result line for each digit in 100.
 0 .3 0 ⨯ 1 0 0 0 0 0
Multiply 0 by 0. Place the result in the next column in the result line. There is one result line for each digit in 100.
 0 .3 0 ⨯ 1 0 0 0 0 0 0
Multiply 0 by 3. Place the result in the next column in the result line. There is one result line for each digit in 100.
 0 .3 0 ⨯ 1 0 0 0 0 0 0 0
Multiply 0 by 0. Place the result in the next column in the result line. There is one result line for each digit in 100.
 0 .3 0 ⨯ 1 0 0 0 0 0 0 0 0
Multiply 1 by 0. Place the result in the next column in the result line. There is one result line for each digit in 100.
 0 .3 0 ⨯ 1 0 0 0 0 0 0 0 0 0
Multiply 1 by 3. Place the result in the next column in the result line. There is one result line for each digit in 100.
 0 .3 0 ⨯ 1 0 0 0 0 0 0 0 0 3 0
Multiply 1 by 0. Place the result in the next column in the result line. There is one result line for each digit in 100.
 0 .3 0 ⨯ 1 0 0 0 0 0 0 0 0 0 3 0
Add the numbers in each column. In this case, add 0+0+0, then place the 0 in the result line.
 0 .3 0 ⨯ 1 0 0 0 0 0 0 0 0 0 3 0 0
Add the numbers in each column. In this case, add 0+0+0, then place the 0 in the result line.
 0 .3 0 ⨯ 1 0 0 0 0 0 0 0 0 0 3 0 0 0
Add the numbers in each column. In this case, add 0+0+0, then place the 0 in the result line.
 0 .3 0 ⨯ 1 0 0 0 0 0 0 0 0 0 3 0 0 0 0
Add the numbers in each column. In this case, add 0+0+3, then place the 3 in the result line.
 0 .3 0 ⨯ 1 0 0 0 0 0 0 0 0 0 3 0 3 0 0 0
 0 .3 0 ⨯ 1 0 0 0 0 0 0 0 0 0 3 0 3 0 0 0
To find the number of decimal places needed in the answer, add the number of decimal places in the multiplier and multiplicand. In this case, there is a total of 2, so the answer must have 2 decimal places as well.
30
Evaluate 0.30*100

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