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

3675 and 3150 is ____ | 2100 and 3675 is ____ | 700 and 600 is ____ | 1575 and 1050 is ____ | 1575 and 1050 is ____ |

336 and 252 is ____ | 1960 and 980 is ____ | 1200 and 1050 is ____ | 900 and 2025 is ____ | 80 and 240 is ____ |

432 and 216 is ____ | 630 and 1260 is ____ | 2450 and 4900 is ____ | 270 and 720 is ____ | 1250 and 3125 is ____ |

1512 and 756 is ____ | 3087 and 2646 is ____ | 588 and 1470 is ____ | 240 and 200 is ____ | 2450 and 3675 is ____ |

1470 and 2058 is ____ | 1050 and 900 is ____ | 2450 and 7350 is ____ | 108 and 72 is ____ | 5880 and 2205 is ____ |

200 and 160 is ____ | 700 and 560 is ____ | 1050 and 3150 is ____ | 756 and 1134 is ____ | 2625 and 1750 is ____ |

420 and 630 is ____ | 2450 and 7350 is ____ | 3675 and 4200 is ____ | 1470 and 420 is ____ | 1250 and 500 is ____ |

13720 and 12005 is ____ | 270 and 432 is ____ | 2940 and 2205 is ____ | 1134 and 756 is ____ | 882 and 1008 is ____ |

4725 and 4200 is ____ | 1470 and 2646 is ____ | 588 and 1470 is ____ | 630 and 1680 is ____ | 168 and 420 is ____ |

630 and 882 is ____ | 2025 and 1350 is ____ | 216 and 324 is ____ | 216 and 324 is ____ | 4200 and 2100 is ____ |

72 and 108 is ____ | 4410 and 2940 is ____ | 1890 and 2835 is ____ | 504 and 392 is ____ | 2940 and 6615 is ____ |

1050 and 1890 is ____ | 3528 and 2646 is ____ | 378 and 1134 is ____ | 540 and 450 is ____ | 336 and 504 is ____ |

980 and 784 is ____ | 480 and 420 is ____ | 200 and 600 is ____ | 2625 and 1050 is ____ | 480 and 120 is ____ |

675 and 1350 is ____ | 300 and 240 is ____ | 378 and 630 is ____ | 810 and 720 is ____ | 2625 and 2100 is ____ |

4116 and 6174 is ____ | 900 and 600 is ____ | 2940 and 4410 is ____ | 1350 and 1575 is ____ | 300 and 1050 is ____ |

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

441 and 252 is ____ | 294 and 150 is ____ | 350 and 1280 is ____ | 490 and 240 is ____ | 2401 and 1920 is ____ |

135 and 640 is ____ | 735 and 480 is ____ | 150 and 210 is ____ | 100 and 336 is ____ | 294 and 240 is ____ |

350 and 432 is ____ | 40 and 144 is ____ | 1715 and 784 is ____ | 196 and 735 is ____ | 56 and 210 is ____ |

735 and 180 is ____ | 135 and 420 is ____ | 350 and 288 is ____ | 210 and 336 is ____ | 56 and 504 is ____ |

1029 and 200 is ____ | 196 and 200 is ____ | 140 and 1536 is ____ | 24 and 96 is ____ | 126 and 750 is ____ |

210 and 360 is ____ | 225 and 1600 is ____ | 350 and 1512 is ____ | 189 and 140 is ____ | 90 and 840 is ____ |

140 and 640 is ____ | 40 and 840 is ____ | 525 and 270 is ____ | 735 and 1200 is ____ | 490 and 126 is ____ |

150 and 240 is ____ | 210 and 672 is ____ | 40 and 1470 is ____ | 189 and 1568 is ____ | 210 and 2352 is ____ |

210 and 672 is ____ | 686 and 960 is ____ | 315 and 60 is ____ | 525 and 504 is ____ | 150 and 96 is ____ |

16 and 96 is ____ | 100 and 432 is ____ | 525 and 1920 is ____ | 84 and 250 is ____ | 135 and 108 is ____ |

210 and 288 is ____ | 210 and 735 is ____ | 210 and 315 is ____ | 525 and 672 is ____ | 210 and 980 is ____ |

24 and 288 is ____ | 90 and 288 is ____ | 210 and 288 is ____ | 250 and 504 is ____ | 210 and 378 is ____ |

1029 and 560 is ____ | 90 and 320 is ____ | 315 and 392 is ____ | 1225 and 1120 is ____ | 126 and 640 is ____ |

735 and 980 is ____ | 350 and 480 is ____ | 56 and 96 is ____ | 315 and 360 is ____ | 210 and 96 is ____ |

350 and 2016 is ____ | 525 and 1440 is ____ | 135 and 256 is ____ | 294 and 750 is ____ | 126 and 288 is ____ |

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