Back to Index | Print Version Answers |

Worksheet 4 - The Highest Common Factor (HCF) and the Lowest Common Multiple (LCM) (Difficulty level: Very Hard) | ||||
---|---|---|---|---|

The Highest Common Factor (H.C.F.) of: | ||||

216 and 72 is ____ | 252 and 168 is ____ | 270 and 630 is ____ | 2250 and 2625 is ____ | 980 and 2450 is ____ |

1120 and 560 is ____ | 252 and 588 is ____ | 400 and 300 is ____ | 1176 and 2352 is ____ | 630 and 540 is ____ |

108 and 144 is ____ | 1372 and 4802 is ____ | 750 and 300 is ____ | 630 and 420 is ____ | 420 and 1050 is ____ |

1764 and 588 is ____ | 168 and 336 is ____ | 2352 and 2646 is ____ | 980 and 2940 is ____ | 2058 and 588 is ____ |

630 and 1134 is ____ | 4410 and 980 is ____ | 420 and 1470 is ____ | 4410 and 2940 is ____ | 1260 and 1050 is ____ |

540 and 630 is ____ | 810 and 270 is ____ | 750 and 600 is ____ | 2352 and 1764 is ____ | 2520 and 2835 is ____ |

504 and 378 is ____ | 1890 and 1680 is ____ | 300 and 480 is ____ | 420 and 280 is ____ | 108 and 378 is ____ |

1568 and 1176 is ____ | 980 and 1764 is ____ | 5488 and 3430 is ____ | 392 and 112 is ____ | 1470 and 882 is ____ |

392 and 588 is ____ | 5145 and 10290 is ____ | 1701 and 945 is ____ | 5880 and 6615 is ____ | 882 and 2205 is ____ |

7875 and 4375 is ____ | 4200 and 3675 is ____ | 630 and 540 is ____ | 1750 and 1050 is ____ | 2205 and 1323 is ____ |

600 and 900 is ____ | 1008 and 756 is ____ | 252 and 1134 is ____ | 450 and 1350 is ____ | 450 and 1350 is ____ |

420 and 672 is ____ | 784 and 1372 is ____ | 280 and 320 is ____ | 1890 and 840 is ____ | 432 and 162 is ____ |

280 and 980 is ____ | 3675 and 1050 is ____ | 3750 and 5625 is ____ | 2800 and 1750 is ____ | 588 and 504 is ____ |

1400 and 700 is ____ | 2058 and 1176 is ____ | 300 and 500 is ____ | 1050 and 1890 is ____ | 270 and 216 is ____ |

2352 and 1470 is ____ | 480 and 420 is ____ | 13720 and 6860 is ____ | 2625 and 2100 is ____ | 3500 and 1750 is ____ |

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

36 and 480 is ____ | 150 and 784 is ____ | 135 and 480 is ____ | 84 and 432 is ____ | 126 and 630 is ____ |

250 and 1344 is ____ | 1029 and 400 is ____ | 140 and 210 is ____ | 315 and 432 is ____ | 1715 and 288 is ____ |

140 and 256 is ____ | 210 and 90 is ____ | 525 and 504 is ____ | 625 and 588 is ____ | 350 and 672 is ____ |

490 and 420 is ____ | 140 and 2240 is ____ | 126 and 756 is ____ | 490 and 672 is ____ | 54 and 560 is ____ |

150 and 432 is ____ | 36 and 640 is ____ | 150 and 720 is ____ | 196 and 648 is ____ | 735 and 280 is ____ |

686 and 120 is ____ | 126 and 180 is ____ | 150 and 336 is ____ | 196 and 120 is ____ | 84 and 640 is ____ |

196 and 720 is ____ | 84 and 80 is ____ | 490 and 448 is ____ | 210 and 672 is ____ | 81 and 320 is ____ |

375 and 480 is ____ | 135 and 288 is ____ | 490 and 640 is ____ | 490 and 700 is ____ | 81 and 882 is ____ |

315 and 768 is ____ | 490 and 280 is ____ | 196 and 126 is ____ | 315 and 2304 is ____ | 294 and 360 is ____ |

84 and 90 is ____ | 350 and 200 is ____ | 126 and 1680 is ____ | 36 and 224 is ____ | 490 and 600 is ____ |

36 and 630 is ____ | 150 and 768 is ____ | 210 and 250 is ____ | 60 and 288 is ____ | 126 and 378 is ____ |

210 and 126 is ____ | 150 and 840 is ____ | 210 and 1536 is ____ | 441 and 1008 is ____ | 250 and 1680 is ____ |

294 and 192 is ____ | 490 and 1568 is ____ | 735 and 240 is ____ | 490 and 80 is ____ | 210 and 64 is ____ |

315 and 735 is ____ | 315 and 1008 is ____ | 525 and 2744 is ____ | 294 and 672 is ____ | 126 and 160 is ____ |

60 and 420 is ____ | 40 and 168 is ____ | 735 and 280 is ____ | 294 and 672 is ____ | 225 and 180 is ____ |

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