# ABE Math Tutorials/Whole numbers/Introduction/Addition and Subtraction Facts

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## Addition and subtraction facts

This is the first lesson to go over your preknowledge on basic addition and subtraction.

# Self Assessment

What are good solid arithmetic skills?Having good arithmetic skills means that you are able to do basic adding, subtracting, multiplying and dividing; quickly, "in your head", from memory. You should be able to answer the following questions like these from memory, without having to figure them out each time. On a piece of paper, write down the question number and your answer. |

1 | 4 + 8 = |

2 | 20 ÷ 5 = |

3 | 7 x 3 = |

4 | 11 - 6 = |

5 | 3 + 9 = |

6 | 8 x 5 = |

7 | 14 - 9 = |

8 | 48 ÷ 6 = |

9 | 4 x 8 = |

10 | 7 + 5 = |

11 | 64 ÷ 8 = |

12 | 16 - 7 = |

13 | 12 - 4 = |

14 | 2 x 6 = |

15 | 72 ÷ 9 = |

16 | 7 + 7 = |

17 | 9 x 6 = |

18 | 11 - 9 = |

19 | 8 + 6 = |

20 | 35 ÷ 5 = |

**Mark yourself**: Ready for the answers? Here they are: (1)12; (2)4; (3)21; (4)5; (5)12; (6)40; (7)5; (8)8; (9)32; (10)12; (11)8; (12)9; (13)8; (14)12; (15)8; (16)14; (17)54; (18)2; (19)14; (20)7.