# Multiply 80*1.5

80⋅1.5
Multiply using long multiplication.
Multiply 5 by 0. Place the result in the next column in the result line. There is one result line for each digit in 1.5.
 8 0 ⨯ 1 .5 0
Multiply 5 by 8. Place the ones digit (0) in the result line and carry the tens digit (4). There is one result line for each digit in 1.5.
 8 0 ⨯ 1 .5 4 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 1.5.
 8 0 ⨯ 1 .5 4 0 0 0
Multiply 1 by 8. Place the result in the next column in the result line. There is one result line for each digit in 1.5.
 8 0 ⨯ 1 .5 4 0 0 8 0
Add the numbers in each column. In this case, add 0+0, then place the 0 in the result line.
 8 0 ⨯ 1 .5 4 0 0 8 0 0
Add the numbers in each column. In this case, add 0+0, then place the 0 in the result line.
 8 0 ⨯ 1 .5 4 0 0 8 0 0 0
Add the numbers in each column. In this case, add 4+8, then place the 2 in the result line and carry the 1.
 8 0 ⨯ 1 .5 4 0 0 8 0 1 2 0 0
 8 0 ⨯ 1 .5 4 0 0 8 0 1 2 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 1, so the answer must have 1 decimal places as well.
120
Multiply 80*1.5

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