Back to Index | Print Version Answers |

Worksheet 4 - The Highest Common Factor (HCF) and the Lowest Common Multiple (LCM) (Difficulty level: Very Hard) | ||||
---|---|---|---|---|

The Highest Common Factor (H.C.F.) of: | ||||

4200 and 2100 is ____ | 504 and 252 is ____ | 504 and 252 is ____ | 1764 and 2058 is ____ | 675 and 1350 is ____ |

1050 and 840 is ____ | 6615 and 3675 is ____ | 392 and 168 is ____ | 252 and 504 is ____ | 378 and 1323 is ____ |

4200 and 3675 is ____ | 2835 and 2520 is ____ | 900 and 1125 is ____ | 2450 and 2100 is ____ | 1323 and 1512 is ____ |

1800 and 450 is ____ | 4410 and 2450 is ____ | 1764 and 882 is ____ | 450 and 810 is ____ | 2450 and 1470 is ____ |

1764 and 1470 is ____ | 900 and 1050 is ____ | 420 and 480 is ____ | 2352 and 882 is ____ | 120 and 160 is ____ |

1960 and 3430 is ____ | 840 and 560 is ____ | 15435 and 12005 is ____ | 4375 and 5250 is ____ | 3430 and 4410 is ____ |

1500 and 1250 is ____ | 5145 and 6174 is ____ | 1050 and 2625 is ____ | 700 and 1120 is ____ | 13720 and 6860 is ____ |

1323 and 945 is ____ | 1890 and 840 is ____ | 1680 and 840 is ____ | 630 and 1470 is ____ | 1470 and 3920 is ____ |

810 and 270 is ____ | 5880 and 4410 is ____ | 630 and 504 is ____ | 360 and 120 is ____ | 630 and 1260 is ____ |

1680 and 1260 is ____ | 2205 and 3087 is ____ | 900 and 800 is ____ | 700 and 840 is ____ | 2520 and 1260 is ____ |

1470 and 2205 is ____ | 11025 and 8575 is ____ | 5145 and 8575 is ____ | 1575 and 450 is ____ | 588 and 420 is ____ |

6615 and 2205 is ____ | 810 and 720 is ____ | 560 and 1120 is ____ | 1680 and 1050 is ____ | 480 and 360 is ____ |

2100 and 1890 is ____ | 2646 and 2058 is ____ | 840 and 630 is ____ | 4200 and 1050 is ____ | 1372 and 588 is ____ |

120 and 320 is ____ | 300 and 1350 is ____ | 1890 and 1260 is ____ | 900 and 300 is ____ | 2940 and 5145 is ____ |

3675 and 4200 is ____ | 2450 and 7350 is ____ | 1575 and 2205 is ____ | 700 and 420 is ____ | 1400 and 1050 is ____ |

The Lowest Common Multiple (L.C.M.) of: | ||||

126 and 448 is ____ | 735 and 112 is ____ | 504 and 126 is ____ | 294 and 80 is ____ | 210 and 360 is ____ |

150 and 2240 is ____ | 54 and 1400 is ____ | 150 and 800 is ____ | 140 and 1120 is ____ | 36 and 1176 is ____ |

315 and 144 is ____ | 126 and 1344 is ____ | 490 and 540 is ____ | 210 and 768 is ____ | 210 and 126 is ____ |

150 and 480 is ____ | 525 and 840 is ____ | 210 and 960 is ____ | 100 and 640 is ____ | 210 and 1008 is ____ |

294 and 576 is ____ | 1225 and 240 is ____ | 875 and 3136 is ____ | 375 and 144 is ____ | 350 and 896 is ____ |

135 and 288 is ____ | 100 and 80 is ____ | 135 and 672 is ____ | 294 and 180 is ____ | 140 and 672 is ____ |

126 and 168 is ____ | 150 and 240 is ____ | 315 and 2744 is ____ | 350 and 1792 is ____ | 210 and 168 is ____ |

490 and 480 is ____ | 1715 and 864 is ____ | 490 and 504 is ____ | 90 and 1960 is ____ | 294 and 288 is ____ |

250 and 1120 is ____ | 210 and 96 is ____ | 210 and 300 is ____ | 1029 and 240 is ____ | 84 and 1680 is ____ |

294 and 588 is ____ | 126 and 1470 is ____ | 250 and 336 is ____ | 81 and 480 is ____ | 350 and 504 is ____ |

315 and 560 is ____ | 525 and 384 is ____ | 196 and 980 is ____ | 490 and 96 is ____ | 350 and 336 is ____ |

525 and 96 is ____ | 150 and 840 is ____ | 189 and 720 is ____ | 294 and 144 is ____ | 126 and 300 is ____ |

24 and 1792 is ____ | 490 and 504 is ____ | 1715 and 56 is ____ | 350 and 200 is ____ | 150 and 360 is ____ |

90 and 480 is ____ | 210 and 120 is ____ | 315 and 90 is ____ | 84 and 168 is ____ | 315 and 490 is ____ |

140 and 450 is ____ | 350 and 576 is ____ | 225 and 240 is ____ | 350 and 240 is ____ | 24 and 100 is ____ |

Copyright 2009 - Adam Malinowski. (Member of CAL, Statutory Licence Schemes)