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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: | ||||

3528 and 3087 is ____ | 500 and 600 is ____ | 840 and 756 is ____ | 1764 and 1372 is ____ | 980 and 1764 is ____ |

1080 and 945 is ____ | 2058 and 588 is ____ | 1568 and 1764 is ____ | 588 and 392 is ____ | 2940 and 3675 is ____ |

700 and 1750 is ____ | 2646 and 1470 is ____ | 1200 and 1050 is ____ | 2835 and 1890 is ____ | 1470 and 1890 is ____ |

3430 and 2744 is ____ | 180 and 720 is ____ | 6174 and 4116 is ____ | 1050 and 4200 is ____ | 5000 and 2500 is ____ |

588 and 1764 is ____ | 900 and 810 is ____ | 360 and 810 is ____ | 540 and 720 is ____ | 4725 and 1050 is ____ |

180 and 540 is ____ | 945 and 630 is ____ | 1680 and 1470 is ____ | 1260 and 1050 is ____ | 216 and 432 is ____ |

1260 and 840 is ____ | 750 and 3000 is ____ | 1050 and 840 is ____ | 900 and 450 is ____ | 630 and 180 is ____ |

1470 and 1176 is ____ | 2646 and 3969 is ____ | 1250 and 1750 is ____ | 900 and 810 is ____ | 108 and 72 is ____ |

420 and 1260 is ____ | 378 and 630 is ____ | 360 and 630 is ____ | 1000 and 750 is ____ | 2800 and 2450 is ____ |

567 and 378 is ____ | 1000 and 1500 is ____ | 240 and 360 is ____ | 3675 and 2940 is ____ | 1575 and 3150 is ____ |

2646 and 2205 is ____ | 588 and 1764 is ____ | 2835 and 2205 is ____ | 10290 and 5145 is ____ | 3000 and 3375 is ____ |

180 and 108 is ____ | 3430 and 1470 is ____ | 1050 and 4725 is ____ | 5145 and 3430 is ____ | 1890 and 2205 is ____ |

756 and 882 is ____ | 900 and 1800 is ____ | 2646 and 2205 is ____ | 21609 and 4802 is ____ | 360 and 240 is ____ |

2625 and 4200 is ____ | 630 and 1890 is ____ | 784 and 1372 is ____ | 2940 and 4410 is ____ | 450 and 360 is ____ |

2450 and 4410 is ____ | 4375 and 7875 is ____ | 1260 and 630 is ____ | 1890 and 1575 is ____ | 1750 and 1050 is ____ |

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

735 and 960 is ____ | 210 and 720 is ____ | 350 and 270 is ____ | 196 and 1008 is ____ | 90 and 768 is ____ |

1225 and 480 is ____ | 100 and 240 is ____ | 1029 and 288 is ____ | 875 and 600 is ____ | 126 and 432 is ____ |

140 and 2048 is ____ | 84 and 720 is ____ | 84 and 360 is ____ | 294 and 420 is ____ | 140 and 384 is ____ |

525 and 864 is ____ | 294 and 1536 is ____ | 210 and 512 is ____ | 441 and 420 is ____ | 875 and 2560 is ____ |

126 and 1000 is ____ | 350 and 252 is ____ | 36 and 1792 is ____ | 686 and 360 is ____ | 210 and 720 is ____ |

196 and 144 is ____ | 60 and 504 is ____ | 735 and 288 is ____ | 2401 and 168 is ____ | 525 and 126 is ____ |

81 and 576 is ____ | 150 and 640 is ____ | 1029 and 1680 is ____ | 1029 and 24 is ____ | 54 and 576 is ____ |

60 and 1344 is ____ | 2401 and 320 is ____ | 210 and 96 is ____ | 315 and 1024 is ____ | 150 and 450 is ____ |

84 and 120 is ____ | 140 and 240 is ____ | 36 and 280 is ____ | 126 and 210 is ____ | 315 and 480 is ____ |

490 and 630 is ____ | 81 and 128 is ____ | 315 and 896 is ____ | 1715 and 336 is ____ | 40 and 80 is ____ |

525 and 120 is ____ | 490 and 720 is ____ | 60 and 126 is ____ | 210 and 336 is ____ | 84 and 750 is ____ |

686 and 315 is ____ | 210 and 360 is ____ | 441 and 896 is ____ | 294 and 1764 is ____ | 315 and 630 is ____ |

90 and 432 is ____ | 315 and 512 is ____ | 84 and 192 is ____ | 126 and 480 is ____ | 294 and 1440 is ____ |

140 and 288 is ____ | 375 and 600 is ____ | 210 and 384 is ____ | 490 and 672 is ____ | 441 and 2352 is ____ |

735 and 192 is ____ | 135 and 96 is ____ | 56 and 96 is ____ | 735 and 2688 is ____ | 16 and 504 is ____ |

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