# Evaluate 0.05*20 0.05⋅20
Multiply using long multiplication.
Multiply 0 by 5. Place the result in the next column in the result line. There is one result line for each digit in 20.
 0 .0 5 ⨯ 2 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 20.
 0 .0 5 ⨯ 2 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 20.
 0 .0 5 ⨯ 2 0 0 0 0
Multiply 2 by 5. Place the ones digit (0) in the result line and carry the tens digit (1). There is one result line for each digit in 20.
 1 0 0 5 ⨯ 2 0 0 0 0 0
Multiply 2 by 0 and add the carried 1. Place the result in the next column in the result line. There is one result line for each digit in 20.
 1 0 0 5 ⨯ 2 0 0 0 0 1 0
Multiply 2 by 0. Place the result in the next column in the result line. There is one result line for each digit in 20.
 0 .0 5 ⨯ 2 0 0 0 0 0 1 0
Add the numbers in each column. In this case, add 0+0, then place the 0 in the result line.
 0 .0 5 ⨯ 2 0 0 0 0 0 1 0 0
Add the numbers in each column. In this case, add 0+0, then place the 0 in the result line.
 0 .0 5 ⨯ 2 0 0 0 0 0 1 0 0 0
Add the numbers in each column. In this case, add 0+1, then place the 1 in the result line.
 0 .0 5 ⨯ 2 0 0 0 0 0 1 0 1 0 0
 0 .0 5 ⨯ 2 0 0 0 0 0 1 0 1 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.
1
Evaluate 0.05*20

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