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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: | ||||

2352 and 588 is ____ | 1750 and 1400 is ____ | 504 and 420 is ____ | 6125 and 7875 is ____ | 2450 and 1470 is ____ |

5145 and 4410 is ____ | 240 and 180 is ____ | 448 and 504 is ____ | 324 and 288 is ____ | 840 and 756 is ____ |

3675 and 2625 is ____ | 336 and 168 is ____ | 180 and 480 is ____ | 2450 and 1400 is ____ | 720 and 630 is ____ |

3675 and 6125 is ____ | 2250 and 750 is ____ | 630 and 882 is ____ | 3150 and 4200 is ____ | 1125 and 1875 is ____ |

7875 and 7000 is ____ | 500 and 750 is ____ | 630 and 1890 is ____ | 2625 and 4725 is ____ | 1323 and 1512 is ____ |

3430 and 1960 is ____ | 500 and 2250 is ____ | 2800 and 2450 is ____ | 2520 and 2205 is ____ | 2520 and 630 is ____ |

1260 and 420 is ____ | 1890 and 1680 is ____ | 630 and 360 is ____ | 240 and 420 is ____ | 1200 and 300 is ____ |

420 and 1260 is ____ | 420 and 980 is ____ | 2450 and 1750 is ____ | 810 and 405 is ____ | 1750 and 1400 is ____ |

1470 and 5145 is ____ | 1176 and 882 is ____ | 270 and 180 is ____ | 567 and 1134 is ____ | 1350 and 900 is ____ |

1050 and 750 is ____ | 420 and 1890 is ____ | 2625 and 7875 is ____ | 540 and 480 is ____ | 200 and 300 is ____ |

3920 and 2450 is ____ | 600 and 1350 is ____ | 1470 and 1176 is ____ | 3920 and 3430 is ____ | 1120 and 1260 is ____ |

420 and 672 is ____ | 588 and 784 is ____ | 270 and 450 is ____ | 1750 and 1400 is ____ | 300 and 600 is ____ |

1680 and 1470 is ____ | 6174 and 3430 is ____ | 1890 and 840 is ____ | 600 and 500 is ____ | 3150 and 2100 is ____ |

882 and 1764 is ____ | 450 and 750 is ____ | 192 and 72 is ____ | 2352 and 2646 is ____ | 1125 and 450 is ____ |

3150 and 4200 is ____ | 6615 and 5880 is ____ | 280 and 1120 is ____ | 1125 and 2250 is ____ | 360 and 480 is ____ |

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

90 and 180 is ____ | 40 and 300 is ____ | 525 and 896 is ____ | 1029 and 216 is ____ | 350 and 140 is ____ |

490 and 1176 is ____ | 54 and 1568 is ____ | 490 and 192 is ____ | 210 and 224 is ____ | 84 and 108 is ____ |

350 and 300 is ____ | 2940 and 735 is ____ | 150 and 240 is ____ | 210 and 2016 is ____ | 36 and 480 is ____ |

90 and 1680 is ____ | 24 and 882 is ____ | 210 and 480 is ____ | 56 and 168 is ____ | 294 and 560 is ____ |

294 and 336 is ____ | 210 and 1680 is ____ | 210 and 840 is ____ | 441 and 56 is ____ | 210 and 1680 is ____ |

150 and 432 is ____ | 100 and 60 is ____ | 1029 and 588 is ____ | 100 and 1920 is ____ | 350 and 168 is ____ |

735 and 720 is ____ | 1029 and 896 is ____ | 90 and 525 is ____ | 210 and 240 is ____ | 525 and 448 is ____ |

135 and 720 is ____ | 90 and 3584 is ____ | 315 and 2016 is ____ | 294 and 360 is ____ | 735 and 150 is ____ |

441 and 288 is ____ | 250 and 448 is ____ | 126 and 180 is ____ | 100 and 1440 is ____ | 315 and 756 is ____ |

150 and 1680 is ____ | 150 and 448 is ____ | 210 and 400 is ____ | 60 and 672 is ____ | 189 and 1372 is ____ |

490 and 192 is ____ | 150 and 72 is ____ | 210 and 180 is ____ | 350 and 288 is ____ | 315 and 126 is ____ |

60 and 336 is ____ | 490 and 180 is ____ | 441 and 480 is ____ | 735 and 1260 is ____ | 315 and 108 is ____ |

150 and 630 is ____ | 126 and 280 is ____ | 135 and 448 is ____ | 56 and 1120 is ____ | 150 and 280 is ____ |

735 and 900 is ____ | 140 and 400 is ____ | 56 and 896 is ____ | 90 and 576 is ____ | 90 and 378 is ____ |

735 and 1470 is ____ | 100 and 1344 is ____ | 90 and 882 is ____ | 140 and 960 is ____ | 375 and 392 is ____ |

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