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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: | ||||

360 and 300 is ____ | 1260 and 1120 is ____ | 600 and 450 is ____ | 810 and 1215 is ____ | 112 and 128 is ____ |

3675 and 6125 is ____ | 15435 and 8575 is ____ | 120 and 192 is ____ | 480 and 420 is ____ | 750 and 1200 is ____ |

3150 and 1050 is ____ | 900 and 1350 is ____ | 200 and 300 is ____ | 450 and 810 is ____ | 270 and 540 is ____ |

756 and 567 is ____ | 1680 and 840 is ____ | 1260 and 1470 is ____ | 3087 and 1323 is ____ | 1050 and 420 is ____ |

1215 and 270 is ____ | 1680 and 420 is ____ | 1400 and 2100 is ____ | 120 and 240 is ____ | 168 and 588 is ____ |

3675 and 2205 is ____ | 360 and 450 is ____ | 1575 and 2835 is ____ | 1750 and 2100 is ____ | 5145 and 2205 is ____ |

2000 and 1750 is ____ | 252 and 168 is ____ | 700 and 600 is ____ | 4410 and 2940 is ____ | 630 and 810 is ____ |

336 and 420 is ____ | 840 and 630 is ____ | 2450 and 4900 is ____ | 2835 and 2520 is ____ | 882 and 378 is ____ |

840 and 1470 is ____ | 1050 and 1400 is ____ | 3675 and 8575 is ____ | 3087 and 2646 is ____ | 1470 and 588 is ____ |

300 and 450 is ____ | 1260 and 1680 is ____ | 3087 and 2058 is ____ | 1470 and 1176 is ____ | 1680 and 1470 is ____ |

567 and 1323 is ____ | 1575 and 2025 is ____ | 810 and 675 is ____ | 11025 and 9800 is ____ | 120 and 300 is ____ |

4410 and 2940 is ____ | 3000 and 1875 is ____ | 300 and 450 is ____ | 588 and 1764 is ____ | 882 and 756 is ____ |

1575 and 1350 is ____ | 4410 and 1960 is ____ | 3150 and 2800 is ____ | 1470 and 1260 is ____ | 2058 and 588 is ____ |

1323 and 3969 is ____ | 200 and 160 is ____ | 4200 and 2625 is ____ | 1176 and 882 is ____ | 2520 and 1890 is ____ |

4200 and 3675 is ____ | 840 and 1890 is ____ | 1890 and 2835 is ____ | 1764 and 1372 is ____ | 450 and 1050 is ____ |

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

210 and 336 is ____ | 60 and 960 is ____ | 90 and 576 is ____ | 60 and 144 is ____ | 210 and 504 is ____ |

735 and 384 is ____ | 375 and 40 is ____ | 90 and 588 is ____ | 375 and 378 is ____ | 150 and 60 is ____ |

189 and 630 is ____ | 225 and 210 is ____ | 140 and 600 is ____ | 294 and 504 is ____ | 40 and 630 is ____ |

189 and 420 is ____ | 24 and 960 is ____ | 210 and 216 is ____ | 294 and 288 is ____ | 294 and 1008 is ____ |

84 and 378 is ____ | 135 and 1120 is ____ | 140 and 192 is ____ | 56 and 2401 is ____ | 84 and 640 is ____ |

150 and 270 is ____ | 150 and 432 is ____ | 60 and 128 is ____ | 735 and 900 is ____ | 490 and 288 is ____ |

90 and 32 is ____ | 735 and 112 is ____ | 135 and 540 is ____ | 350 and 1029 is ____ | 2401 and 180 is ____ |

210 and 784 is ____ | 24 and 960 is ____ | 375 and 320 is ____ | 126 and 72 is ____ | 1575 and 315 is ____ |

150 and 135 is ____ | 90 and 160 is ____ | 210 and 480 is ____ | 24 and 840 is ____ | 210 and 192 is ____ |

150 and 144 is ____ | 60 and 256 is ____ | 150 and 224 is ____ | 150 and 300 is ____ | 54 and 672 is ____ |

60 and 750 is ____ | 40 and 80 is ____ | 189 and 1152 is ____ | 100 and 360 is ____ | 490 and 756 is ____ |

100 and 192 is ____ | 90 and 720 is ____ | 294 and 60 is ____ | 490 and 1152 is ____ | 189 and 240 is ____ |

90 and 96 is ____ | 150 and 504 is ____ | 490 and 300 is ____ | 1029 and 360 is ____ | 90 and 400 is ____ |

126 and 504 is ____ | 100 and 525 is ____ | 875 and 756 is ____ | 525 and 300 is ____ | 1029 and 280 is ____ |

140 and 360 is ____ | 140 and 360 is ____ | 840 and 210 is ____ | 140 and 576 is ____ | 84 and 320 is ____ |

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