# Evaluate 0.60*21 0.6⋅21
Multiply using long multiplication.
Multiply 1 by 0. Place the result in the next column in the result line. There is one result line for each digit in 21.
 0 .6 0 ⨯ 2 1 0
Multiply 1 by 6. Place the result in the next column in the result line. There is one result line for each digit in 21.
 0 .6 0 ⨯ 2 1 6 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 21.
 0 .6 0 ⨯ 2 1 0 6 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 21.
 0 .6 0 ⨯ 2 1 0 6 0 0
Multiply 2 by 6. Place the ones digit (2) in the result line and carry the tens digit (1). There is one result line for each digit in 21.
 1 0 .6 0 ⨯ 2 1 0 6 0 2 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 21.
 0 .6 0 ⨯ 2 1 0 6 0 1 2 0
Add the numbers in each column. In this case, add 0+0, then place the 0 in the result line.
 0 .6 0 ⨯ 2 1 0 6 0 1 2 0 0
Add the numbers in each column. In this case, add 6+0, then place the 6 in the result line.
 0 .6 0 ⨯ 2 1 0 6 0 1 2 0 6 0
Add the numbers in each column. In this case, add 0+2, then place the 2 in the result line.
 0 .6 0 ⨯ 2 1 0 6 0 1 2 0 2 6 0
Add the numbers in each column. In this case, add 0+1, then place the 1 in the result line.
 0 .6 0 ⨯ 2 1 0 6 0 1 2 0 1 2 6 0
 0 .6 0 ⨯ 2 1 0 6 0 1 2 0 1 2 6 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.
12.6
Evaluate 0.60*21

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