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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: | ||||

3430 and 980 is ____ | 1260 and 1470 is ____ | 450 and 810 is ____ | 980 and 2940 is ____ | 4900 and 11025 is ____ |

192 and 96 is ____ | 2100 and 3150 is ____ | 2250 and 2000 is ____ | 1350 and 600 is ____ | 160 and 200 is ____ |

180 and 720 is ____ | 240 and 360 is ____ | 1050 and 300 is ____ | 3969 and 2646 is ____ | 480 and 360 is ____ |

1470 and 2352 is ____ | 450 and 270 is ____ | 252 and 1134 is ____ | 4725 and 1050 is ____ | 540 and 180 is ____ |

24010 and 21609 is ____ | 1470 and 1176 is ____ | 252 and 72 is ____ | 300 and 750 is ____ | 1050 and 1260 is ____ |

1120 and 420 is ____ | 420 and 504 is ____ | 1500 and 1750 is ____ | 324 and 288 is ____ | 4725 and 4200 is ____ |

1260 and 840 is ____ | 14406 and 12005 is ____ | 540 and 240 is ____ | 1008 and 252 is ____ | 2800 and 1050 is ____ |

700 and 420 is ____ | 420 and 1050 is ____ | 4725 and 1575 is ____ | 1764 and 392 is ____ | 2646 and 3087 is ____ |

360 and 480 is ____ | 630 and 450 is ____ | 1176 and 784 is ____ | 2646 and 2352 is ____ | 756 and 420 is ____ |

756 and 1323 is ____ | 1470 and 588 is ____ | 900 and 1350 is ____ | 2646 and 882 is ____ | 4410 and 3920 is ____ |

4410 and 2450 is ____ | 108 and 180 is ____ | 504 and 1008 is ____ | 1260 and 2520 is ____ | 180 and 540 is ____ |

2646 and 2205 is ____ | 360 and 540 is ____ | 1350 and 1200 is ____ | 1764 and 588 is ____ | 2625 and 4200 is ____ |

420 and 630 is ____ | 1120 and 980 is ____ | 420 and 756 is ____ | 1400 and 2450 is ____ | 1764 and 882 is ____ |

4410 and 3920 is ____ | 3675 and 3150 is ____ | 4375 and 7875 is ____ | 540 and 120 is ____ | 504 and 378 is ____ |

2940 and 2205 is ____ | 1470 and 420 is ____ | 300 and 450 is ____ | 840 and 1890 is ____ | 192 and 96 is ____ |

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

294 and 180 is ____ | 735 and 140 is ____ | 294 and 864 is ____ | 90 and 560 is ____ | 60 and 150 is ____ |

1225 and 210 is ____ | 490 and 588 is ____ | 126 and 1792 is ____ | 90 and 1225 is ____ | 490 and 320 is ____ |

735 and 1008 is ____ | 735 and 1960 is ____ | 150 and 1008 is ____ | 294 and 400 is ____ | 490 and 700 is ____ |

90 and 960 is ____ | 225 and 336 is ____ | 126 and 48 is ____ | 210 and 1536 is ____ | 1715 and 420 is ____ |

150 and 490 is ____ | 686 and 1120 is ____ | 250 and 980 is ____ | 1225 and 2688 is ____ | 210 and 504 is ____ |

140 and 400 is ____ | 1225 and 126 is ____ | 140 and 378 is ____ | 196 and 840 is ____ | 126 and 300 is ____ |

210 and 576 is ____ | 315 and 450 is ____ | 525 and 630 is ____ | 1715 and 64 is ____ | 350 and 672 is ____ |

90 and 525 is ____ | 375 and 768 is ____ | 210 and 280 is ____ | 210 and 750 is ____ | 56 and 294 is ____ |

90 and 588 is ____ | 40 and 320 is ____ | 16 and 630 is ____ | 16 and 512 is ____ | 40 and 896 is ____ |

84 and 560 is ____ | 126 and 882 is ____ | 525 and 980 is ____ | 196 and 700 is ____ | 84 and 360 is ____ |

210 and 640 is ____ | 350 and 60 is ____ | 126 and 840 is ____ | 225 and 392 is ____ | 315 and 960 is ____ |

735 and 400 is ____ | 60 and 288 is ____ | 735 and 800 is ____ | 196 and 840 is ____ | 100 and 800 is ____ |

126 and 392 is ____ | 210 and 1792 is ____ | 294 and 448 is ____ | 525 and 504 is ____ | 90 and 120 is ____ |

126 and 72 is ____ | 36 and 150 is ____ | 16 and 784 is ____ | 140 and 576 is ____ | 1225 and 432 is ____ |

490 and 480 is ____ | 84 and 864 is ____ | 1225 and 1120 is ____ | 56 and 120 is ____ | 84 and 270 is ____ |

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