## Practice addition strategies## Count up
Although ## Double Partner
## Double neighbour
If you know 6 + 6 is 12, then 6 + 7 is just 6 + 6 + 1 = 13. ## Ten's partner
## Make ten
For 6 + 9, think 5 + 10 => split the 6 to make the problem 5 + 1 + 9 = 5 + 10 |

## Subtraction strategies## Count down
Although ## Double Partner
## Double neighbour
16 – 8 = 8, so 17 – 8 = 9 ## Ten's partner
## Make ten
Convert a minus 8 to a minus 10, and then add 2 back: |

The report shows learning progress in percentage (0% - not learned, 100% - learned perfectly).

There are three levels of the report.

**Addition strategy**: 60%

**Subtraction strategy**: 54%

1-10 **addition, subtraction strategies** **learning** progress:

Counting up(down) | 87% |

Double partner | 26% |

Double neighbour | 27% |

Ten's partner | 43% |

Make ten | 87% |

Counting | ||||
---|---|---|---|---|

Count up | 83% | Count down | 90% | |

Double partner | ||||

1+1 | 20% | 2-1 | 40% | |

2+2 | 0% | 4-2 | 0% | |

3+3 | 0% | 6-3 | 80% | |

4+4 | 60% | 8-4 | 36% | |

5+5 | 100% | 10-5 | 80% | |

6+6 | 20% | 12-6 | 0% | |

7+7 | 20% | 14-7 | 0% | |

8+8 | 0% | 16-8 | 20% | |

9+9 | 20% | 18-9 | 20% | |

10+10 | 0% | 20-10 | 0% | |

Double neighbour | ||||

1+0, 1+2 | 0% | 1-1, 3-1 | 20% | |

2+1, 2+3 | 10% | 3-2, 5-2 | 20% | |

3+2, 3+4 | 0% | 5-3, 7-3 | 10% | |

4+3, 4+5 | 20% | 7-4, 9-4 | 30% | |

5+4, 5+6 | 10% | 9-5, 11-5 | 50% | |

6+5, 6+7 | 30% | 11-6, 13-6 | 79% | |

7+6, 7+8 | 32% | 13-7, 15-7 | 40% | |

8+7, 8+9 | 10% | 15-8, 17-8 | 60% | |

9+8, 9+10 | 48% | 17-9, 19-9 | 0% | |

10+9, 10+11 | 50% | 19-10, 21-10 | 10% | |

Ten's partner | ||||

1+9 | 60% | 10-1 | 0% | |

2+8 | 90% | 10-2 | 0% | |

3+7 | 0% | 10-3 | 20% | |

4+6 | 60% | 10-4 | 20% | |

5+5 | 100% | 10-5 | 80% | |

6+4 | 20% | 10-6 | 60% | |

7+3 | 100% | 10-7 | 56% | |

8+2 | 0% | 10-8 | 60% | |

9+1 | 40% | 10-9 | 0% | |

Make ten | ||||

XX+9 | 100% | XX-9 | 87% | |

XX+8 | 80% | XX-8 | 80% |