30.8⋅3.2

Multiply 2 by 8. Place the ones digit (6) in the result line and carry the tens digit (1). There is one result line for each digit in 3.2.

1 | |||

3 | 0 | .8 | |

⨯ | 3 | .2 | |

6 |

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 3.2.

1 | |||

3 | 0 | .8 | |

⨯ | 3 | .2 | |

1 | 6 |

Multiply 2 by 3. Place the result in the next column in the result line. There is one result line for each digit in 3.2.

3 | 0 | .8 | |

⨯ | 3 | .2 | |

6 | 1 | 6 |

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 3.2.

2 | |||

3 | 0 | .8 | |

⨯ | 3 | .2 | |

6 | 1 | 6 | |

4 |

Multiply 3 by 0 and add the carried 2. Place the result in the next column in the result line. There is one result line for each digit in 3.2.

2 | |||

3 | 0 | .8 | |

⨯ | 3 | .2 | |

6 | 1 | 6 | |

2 | 4 |

Multiply 3 by 3. Place the result in the next column in the result line. There is one result line for each digit in 3.2.

3 | 0 | .8 | |

⨯ | 3 | .2 | |

6 | 1 | 6 | |

9 | 2 | 4 |

Add the numbers in each column. In this case, add 6+0, then place the 6 in the result line.

3 | 0 | .8 | |

⨯ | 3 | .2 | |

6 | 1 | 6 | |

9 | 2 | 4 | |

6 |

Add the numbers in each column. In this case, add 1+4, then place the 5 in the result line.

3 | 0 | .8 | |

⨯ | 3 | .2 | |

6 | 1 | 6 | |

9 | 2 | 4 | |

5 | 6 |

Add the numbers in each column. In this case, add 6+2, then place the 8 in the result line.

3 | 0 | .8 | |

⨯ | 3 | .2 | |

6 | 1 | 6 | |

9 | 2 | 4 | |

8 | 5 | 6 |

Add the numbers in each column. In this case, add 0+9, then place the 9 in the result line.

3 | 0 | .8 | |

⨯ | 3 | .2 | |

6 | 1 | 6 | |

9 | 2 | 4 | |

9 | 8 | 5 | 6 |

3 | 0 | .8 | |

⨯ | 3 | .2 | |

6 | 1 | 6 | |

9 | 2 | 4 | |

9 | 8 | 5 | 6 |

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.

98.56

Multiply 30.8*3.2