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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: | ||||

300 and 540 is ____ | 3675 and 2450 is ____ | 945 and 756 is ____ | 5880 and 6615 is ____ | 1470 and 1890 is ____ |

504 and 168 is ____ | 630 and 378 is ____ | 180 and 270 is ____ | 2000 and 2250 is ____ | 700 and 560 is ____ |

840 and 1260 is ____ | 420 and 252 is ____ | 1134 and 630 is ____ | 882 and 3087 is ____ | 1960 and 1764 is ____ |

1680 and 840 is ____ | 5880 and 1470 is ____ | 32 and 128 is ____ | 4116 and 2058 is ____ | 1372 and 1764 is ____ |

480 and 420 is ____ | 108 and 180 is ____ | 630 and 1050 is ____ | 80 and 64 is ____ | 180 and 480 is ____ |

1764 and 2205 is ____ | 672 and 588 is ____ | 1470 and 2205 is ____ | 6174 and 5488 is ____ | 2625 and 1050 is ____ |

1134 and 1323 is ____ | 480 and 240 is ____ | 2835 and 1575 is ____ | 750 and 600 is ____ | 2205 and 1470 is ____ |

1890 and 945 is ____ | 1890 and 840 is ____ | 1575 and 4200 is ____ | 2940 and 5880 is ____ | 4116 and 2058 is ____ |

840 and 700 is ____ | 10290 and 9261 is ____ | 5880 and 2205 is ____ | 588 and 392 is ____ | 560 and 420 is ____ |

3750 and 3125 is ____ | 900 and 1125 is ____ | 360 and 540 is ____ | 750 and 1050 is ____ | 432 and 486 is ____ |

2205 and 1470 is ____ | 2940 and 1470 is ____ | 1400 and 2450 is ____ | 2940 and 2205 is ____ | 2520 and 2205 is ____ |

540 and 720 is ____ | 1680 and 1890 is ____ | 336 and 252 is ____ | 252 and 420 is ____ | 160 and 360 is ____ |

2450 and 3920 is ____ | 2520 and 630 is ____ | 1125 and 2025 is ____ | 1470 and 1764 is ____ | 700 and 560 is ____ |

6174 and 1372 is ____ | 2450 and 3430 is ____ | 630 and 1890 is ____ | 450 and 1350 is ____ | 180 and 420 is ____ |

810 and 675 is ____ | 1500 and 2000 is ____ | 540 and 720 is ____ | 1470 and 1260 is ____ | 168 and 672 is ____ |

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

294 and 784 is ____ | 150 and 640 is ____ | 196 and 560 is ____ | 490 and 672 is ____ | 60 and 288 is ____ |

735 and 240 is ____ | 84 and 224 is ____ | 490 and 384 is ____ | 150 and 1120 is ____ | 350 and 81 is ____ |

350 and 960 is ____ | 126 and 288 is ____ | 60 and 240 is ____ | 350 and 324 is ____ | 2401 and 294 is ____ |

126 and 504 is ____ | 84 and 1280 is ____ | 210 and 126 is ____ | 490 and 128 is ____ | 140 and 360 is ____ |

350 and 600 is ____ | 24 and 588 is ____ | 140 and 224 is ____ | 56 and 882 is ____ | 225 and 2058 is ____ |

294 and 360 is ____ | 90 and 1152 is ____ | 150 and 320 is ____ | 525 and 768 is ____ | 315 and 480 is ____ |

350 and 256 is ____ | 150 and 600 is ____ | 100 and 360 is ____ | 1029 and 768 is ____ | 875 and 882 is ____ |

735 and 480 is ____ | 84 and 120 is ____ | 150 and 315 is ____ | 525 and 768 is ____ | 60 and 224 is ____ |

441 and 168 is ____ | 56 and 126 is ____ | 625 and 48 is ____ | 36 and 360 is ____ | 40 and 126 is ____ |

735 and 1344 is ____ | 189 and 768 is ____ | 350 and 600 is ____ | 350 and 3136 is ____ | 441 and 768 is ____ |

210 and 180 is ____ | 135 and 1000 is ____ | 150 and 288 is ____ | 250 and 512 is ____ | 150 and 840 is ____ |

315 and 216 is ____ | 1029 and 840 is ____ | 490 and 420 is ____ | 60 and 1344 is ____ | 90 and 588 is ____ |

735 and 360 is ____ | 210 and 882 is ____ | 294 and 840 is ____ | 735 and 192 is ____ | 735 and 288 is ____ |

375 and 180 is ____ | 250 and 300 is ____ | 210 and 288 is ____ | 150 and 672 is ____ | 210 and 735 is ____ |

294 and 112 is ____ | 441 and 560 is ____ | 54 and 144 is ____ | 225 and 192 is ____ | 210 and 1080 is ____ |

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