Addition of Decimals

Place the decimal points under each other, and add
as in integers.

Examples:

(1) Required the sum of 3676.1, 37.049, 160.63,
12.3645

Macdonald was not paying attention to what he was
copying. The first two numbers 3676.1 and 37.049 are part of the second example.
Here is Macdonald’s answer.

32.035 |

116.374 |

160.63 |

12.3645 |

321.4035 |

(2) Required the sum of 3676.1, 37.049, 188.27,
57642.00818, 390., 549.782

Again, Macdonald was not paying attention to what he
was copying. The last number, 549.782 is written as 594.782 in the column for
summation. The answer is correct when the number 549.782 is used.

3676.1 |

37.049 |

188.27 |

57642.00818 |

390. |

594.782 |

62483.20918 |