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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: | ||||

270 and 540 is ____ | 1470 and 4410 is ____ | 280 and 1120 is ____ | 1323 and 1764 is ____ | 1680 and 1260 is ____ |

450 and 600 is ____ | 1890 and 630 is ____ | 1134 and 756 is ____ | 3675 and 6615 is ____ | 1575 and 900 is ____ |

2205 and 6615 is ____ | 180 and 450 is ____ | 405 and 1215 is ____ | 4200 and 3675 is ____ | 1750 and 1400 is ____ |

360 and 720 is ____ | 80 and 200 is ____ | 1176 and 784 is ____ | 4410 and 5145 is ____ | 5880 and 5145 is ____ |

9800 and 8575 is ____ | 432 and 486 is ____ | 3675 and 5145 is ____ | 420 and 240 is ____ | 840 and 1890 is ____ |

324 and 252 is ____ | 240 and 540 is ____ | 1470 and 6615 is ____ | 750 and 300 is ____ | 162 and 108 is ____ |

1260 and 420 is ____ | 162 and 486 is ____ | 675 and 810 is ____ | 1890 and 1680 is ____ | 4900 and 7350 is ____ |

6174 and 5488 is ____ | 1680 and 630 is ____ | 700 and 1260 is ____ | 630 and 378 is ____ | 1680 and 1260 is ____ |

2100 and 1050 is ____ | 1470 and 3430 is ____ | 1500 and 1350 is ____ | 3675 and 1575 is ____ | 3000 and 1125 is ____ |

840 and 1680 is ____ | 240 and 200 is ____ | 2625 and 1575 is ____ | 1134 and 756 is ____ | 450 and 1200 is ____ |

1750 and 7000 is ____ | 108 and 72 is ____ | 1050 and 1200 is ____ | 980 and 784 is ____ | 1008 and 1134 is ____ |

392 and 336 is ____ | 216 and 72 is ____ | 252 and 324 is ____ | 5880 and 4410 is ____ | 336 and 252 is ____ |

4410 and 5145 is ____ | 1372 and 1764 is ____ | 112 and 392 is ____ | 1470 and 1890 is ____ | 540 and 486 is ____ |

560 and 980 is ____ | 144 and 96 is ____ | 2205 and 1323 is ____ | 2100 and 700 is ____ | 3675 and 6125 is ____ |

120 and 180 is ____ | 1575 and 1890 is ____ | 2940 and 2450 is ____ | 945 and 756 is ____ | 270 and 945 is ____ |

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

350 and 200 is ____ | 60 and 252 is ____ | 150 and 160 is ____ | 40 and 1280 is ____ | 210 and 420 is ____ |

36 and 1680 is ____ | 150 and 280 is ____ | 150 and 1225 is ____ | 315 and 210 is ____ | 225 and 315 is ____ |

135 and 1372 is ____ | 250 and 1152 is ____ | 84 and 576 is ____ | 126 and 324 is ____ | 210 and 735 is ____ |

210 and 84 is ____ | 84 and 896 is ____ | 735 and 448 is ____ | 490 and 1680 is ____ | 1715 and 560 is ____ |

525 and 350 is ____ | 225 and 576 is ____ | 140 and 576 is ____ | 1715 and 96 is ____ | 140 and 300 is ____ |

375 and 576 is ____ | 875 and 1600 is ____ | 54 and 1050 is ____ | 140 and 400 is ____ | 126 and 1440 is ____ |

735 and 448 is ____ | 490 and 540 is ____ | 2401 and 1536 is ____ | 735 and 600 is ____ | 1225 and 2240 is ____ |

189 and 180 is ____ | 90 and 450 is ____ | 100 and 1120 is ____ | 490 and 210 is ____ | 294 and 192 is ____ |

250 and 96 is ____ | 90 and 480 is ____ | 1029 and 392 is ____ | 84 and 768 is ____ | 490 and 360 is ____ |

1225 and 800 is ____ | 1029 and 360 is ____ | 294 and 288 is ____ | 189 and 1680 is ____ | 210 and 576 is ____ |

525 and 1050 is ____ | 90 and 900 is ____ | 90 and 320 is ____ | 1029 and 1568 is ____ | 60 and 210 is ____ |

441 and 270 is ____ | 56 and 700 is ____ | 735 and 1792 is ____ | 189 and 672 is ____ | 140 and 1680 is ____ |

135 and 560 is ____ | 196 and 240 is ____ | 126 and 3072 is ____ | 210 and 192 is ____ | 294 and 336 is ____ |

250 and 840 is ____ | 735 and 1400 is ____ | 210 and 3072 is ____ | 180 and 90 is ____ | 441 and 2352 is ____ |

735 and 480 is ____ | 60 and 210 is ____ | 140 and 560 is ____ | 375 and 576 is ____ | 525 and 60 is ____ |

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