Back to Index Print Version    Answers

Select difficulty:  Easy  Medium  Hard  Very Hard 
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:
10290 and 9261 is ____ 192 and 120 is ____ 560 and 420 is ____ 5880 and 1470 is ____ 600 and 300 is ____
300 and 360 is ____ 3150 and 2100 is ____ 3430 and 3920 is ____ 5250 and 7000 is ____ 840 and 630 is ____
252 and 882 is ____ 1176 and 2058 is ____ 6125 and 1750 is ____ 3087 and 5145 is ____ 3920 and 980 is ____
168 and 216 is ____ 756 and 504 is ____ 2646 and 882 is ____ 1134 and 252 is ____ 270 and 720 is ____
324 and 180 is ____ 540 and 360 is ____ 7350 and 4900 is ____ 2800 and 2450 is ____ 1260 and 630 is ____
882 and 2646 is ____ 3920 and 1960 is ____ 2450 and 1960 is ____ 216 and 324 is ____ 800 and 700 is ____
1050 and 2450 is ____ 2940 and 3920 is ____ 630 and 1134 is ____ 450 and 1125 is ____ 3150 and 1750 is ____
3000 and 2625 is ____ 630 and 1680 is ____ 1890 and 420 is ____ 560 and 840 is ____ 450 and 300 is ____
1050 and 2100 is ____ 120 and 540 is ____ 96 and 48 is ____ 448 and 224 is ____ 672 and 168 is ____
448 and 224 is ____ 288 and 72 is ____ 700 and 980 is ____ 700 and 2450 is ____ 1575 and 3675 is ____
180 and 360 is ____ 840 and 1260 is ____ 360 and 300 is ____ 3150 and 700 is ____ 1050 and 2100 is ____
300 and 540 is ____ 8575 and 7350 is ____ 336 and 280 is ____ 1260 and 1134 is ____ 1050 and 1260 is ____
720 and 540 is ____ 700 and 1120 is ____ 3528 and 1323 is ____ 882 and 3969 is ____ 630 and 360 is ____
216 and 192 is ____ 3920 and 2450 is ____ 2352 and 1764 is ____ 3430 and 2940 is ____ 2646 and 2058 is ____
4200 and 1050 is ____ 112 and 168 is ____ 2352 and 2646 is ____ 3675 and 4200 is ____ 252 and 1134 is ____
The Lowest Common Multiple (L.C.M.) of:
84 and 525 is ____ 1029 and 60 is ____ 686 and 588 is ____ 294 and 784 is ____ 375 and 336 is ____
225 and 648 is ____ 150 and 588 is ____ 315 and 1440 is ____ 150 and 1008 is ____ 60 and 294 is ____
210 and 168 is ____ 441 and 240 is ____ 140 and 336 is ____ 60 and 1792 is ____ 60 and 288 is ____
350 and 1176 is ____ 84 and 504 is ____ 490 and 350 is ____ 294 and 252 is ____ 84 and 640 is ____
54 and 192 is ____ 294 and 1024 is ____ 56 and 224 is ____ 36 and 100 is ____ 686 and 576 is ____
625 and 576 is ____ 250 and 750 is ____ 294 and 1080 is ____ 100 and 200 is ____ 60 and 525 is ____
126 and 432 is ____ 150 and 2352 is ____ 735 and 448 is ____ 210 and 1008 is ____ 875 and 768 is ____
60 and 192 is ____ 210 and 168 is ____ 735 and 315 is ____ 100 and 504 is ____ 56 and 560 is ____
54 and 90 is ____ 210 and 252 is ____ 375 and 896 is ____ 875 and 980 is ____ 90 and 3584 is ____
140 and 560 is ____ 350 and 140 is ____ 315 and 720 is ____ 735 and 720 is ____ 140 and 84 is ____
1715 and 441 is ____ 294 and 896 is ____ 490 and 336 is ____ 1715 and 784 is ____ 350 and 140 is ____
210 and 960 is ____ 126 and 252 is ____ 1715 and 896 is ____ 189 and 672 is ____ 490 and 256 is ____
60 and 144 is ____ 36 and 800 is ____ 315 and 1960 is ____ 1715 and 504 is ____ 189 and 84 is ____
90 and 216 is ____ 225 and 672 is ____ 40 and 840 is ____ 56 and 1120 is ____ 350 and 480 is ____
84 and 720 is ____ 315 and 1152 is ____ 140 and 840 is ____ 24 and 960 is ____ 24 and 384 is ____

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