2 | Divide the number in half - up to 500 [1] | | | |

2 | Divide the number in half - up to 500 [2] | | | |

3 | Divide the number in half - up to 1,000 [1] | | | |

3 | Divide the number in half - up to 1,000 [2] | | | |

4 | Divide the number in half - up to 2,000 [1] | | | |

4 | Divide the number in half - up to 2,000 [2] | | | |

5 | Divide the number in half - up to 5,000 [1] | | | |

5 | Divide the number in half - up to 5,000 [2] | | | |