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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: | ||||

588 and 2058 is ____ | 630 and 378 is ____ | 7350 and 4900 is ____ | 504 and 378 is ____ | 840 and 1260 is ____ |

700 and 600 is ____ | 378 and 252 is ____ | 630 and 180 is ____ | 180 and 480 is ____ | 1008 and 630 is ____ |

6125 and 3675 is ____ | 1470 and 1890 is ____ | 480 and 120 is ____ | 1500 and 2250 is ____ | 1890 and 420 is ____ |

1890 and 1260 is ____ | 1050 and 1890 is ____ | 280 and 980 is ____ | 6615 and 2205 is ____ | 168 and 588 is ____ |

980 and 784 is ____ | 2625 and 6125 is ____ | 252 and 672 is ____ | 180 and 120 is ____ | 2058 and 1470 is ____ |

4725 and 4200 is ____ | 810 and 720 is ____ | 2450 and 3430 is ____ | 540 and 360 is ____ | 3087 and 9261 is ____ |

700 and 2800 is ____ | 700 and 560 is ____ | 3969 and 2646 is ____ | 1134 and 378 is ____ | 378 and 324 is ____ |

756 and 504 is ____ | 4725 and 3150 is ____ | 1350 and 450 is ____ | 588 and 1764 is ____ | 2940 and 2450 is ____ |

4410 and 3920 is ____ | 1575 and 1050 is ____ | 2352 and 1764 is ____ | 6125 and 4375 is ____ | 168 and 72 is ____ |

3430 and 1372 is ____ | 420 and 630 is ____ | 2205 and 5880 is ____ | 800 and 700 is ____ | 336 and 672 is ____ |

588 and 504 is ____ | 405 and 648 is ____ | 72 and 216 is ____ | 6174 and 2744 is ____ | 8575 and 3675 is ____ |

1680 and 630 is ____ | 162 and 108 is ____ | 7203 and 6174 is ____ | 1470 and 6615 is ____ | 1350 and 1050 is ____ |

144 and 48 is ____ | 360 and 180 is ____ | 1120 and 280 is ____ | 1470 and 980 is ____ | 3675 and 9800 is ____ |

48 and 72 is ____ | 1260 and 1050 is ____ | 162 and 486 is ____ | 270 and 216 is ____ | 784 and 588 is ____ |

3920 and 980 is ____ | 1350 and 300 is ____ | 1764 and 2058 is ____ | 4375 and 3500 is ____ | 3087 and 9261 is ____ |

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

150 and 72 is ____ | 56 and 630 is ____ | 140 and 960 is ____ | 441 and 1008 is ____ | 40 and 210 is ____ |

375 and 1344 is ____ | 294 and 256 is ____ | 84 and 600 is ____ | 100 and 800 is ____ | 90 and 490 is ____ |

315 and 144 is ____ | 60 and 1792 is ____ | 56 and 2240 is ____ | 210 and 672 is ____ | 225 and 252 is ____ |

225 and 144 is ____ | 490 and 504 is ____ | 135 and 2352 is ____ | 315 and 768 is ____ | 150 and 280 is ____ |

36 and 1400 is ____ | 315 and 288 is ____ | 56 and 252 is ____ | 490 and 768 is ____ | 210 and 560 is ____ |

210 and 240 is ____ | 1715 and 350 is ____ | 196 and 108 is ____ | 315 and 2352 is ____ | 90 and 784 is ____ |

210 and 300 is ____ | 1225 and 1008 is ____ | 210 and 720 is ____ | 150 and 240 is ____ | 210 and 216 is ____ |

60 and 1050 is ____ | 250 and 210 is ____ | 150 and 420 is ____ | 140 and 392 is ____ | 126 and 120 is ____ |

40 and 400 is ____ | 490 and 784 is ____ | 350 and 256 is ____ | 210 and 980 is ____ | 54 and 294 is ____ |

196 and 144 is ____ | 294 and 288 is ____ | 875 and 1680 is ____ | 90 and 1680 is ____ | 135 and 288 is ____ |

225 and 240 is ____ | 210 and 336 is ____ | 315 and 192 is ____ | 126 and 224 is ____ | 1029 and 240 is ____ |

735 and 150 is ____ | 735 and 875 is ____ | 210 and 672 is ____ | 350 and 144 is ____ | 60 and 600 is ____ |

84 and 720 is ____ | 225 and 200 is ____ | 210 and 1152 is ____ | 225 and 450 is ____ | 225 and 300 is ____ |

210 and 441 is ____ | 1029 and 432 is ____ | 56 and 560 is ____ | 126 and 1008 is ____ | 441 and 144 is ____ |

735 and 320 is ____ | 210 and 120 is ____ | 90 and 600 is ____ | 90 and 960 is ____ | 126 and 336 is ____ |

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