7Find theHCF of 21and 49.10Find theHCF of30, 70,and 100.2Cut 10m and12m ribbonsinto equallongestpieces.18What isthe largestfactor of18?12Find theHCF of 48and 60.2,3List theprimefactors of12.4Which factorof 20 ismissing: 1,2, __, 5, 10,20?14Find theHCF of 28and 70.15Tiles:Largestsquare tilefor a 45m x60m floor.3How manyfactors doesthe number4 have?6Find theHCF of 18and 30.1What isthe HCFof 8 and15?5,7List theprimefactors of35.918 blue and27 red pensin equalsets. Maxsets?2,3,5List allprimefactors of60.13What isthe primefactor of169?2,5List theprimefactors of50.3,5List theprimefactors of15.11Find theprimefactor of121.1,3,9List all thefactors of9.520 applesand 35 pearssharedequally. Maxpeople?2,7List theprimefactors of14.16List a factorof 32 that isbetween 10and 20.8Find theHCF of 16and 40.7Find theHCF of 21and 49.10Find theHCF of30, 70,and 100.2Cut 10m and12m ribbonsinto equallongestpieces.18What isthe largestfactor of18?12Find theHCF of 48and 60.2,3List theprimefactors of12.4Which factorof 20 ismissing: 1,2, __, 5, 10,20?14Find theHCF of 28and 70.15Tiles:Largestsquare tilefor a 45m x60m floor.3How manyfactors doesthe number4 have?6Find theHCF of 18and 30.1What isthe HCFof 8 and15?5,7List theprimefactors of35.918 blue and27 red pensin equalsets. Maxsets?2,3,5List allprimefactors of60.13What isthe primefactor of169?2,5List theprimefactors of50.3,5List theprimefactors of15.11Find theprimefactor of121.1,3,9List all thefactors of9.520 applesand 35 pearssharedequally. Maxpeople?2,7List theprimefactors of14.16List a factorof 32 that isbetween 10and 20.8Find theHCF of 16and 40.

Factors, Prime Factors & Highest Common Factors(HCF) - Call List

(Print) Use this randomly generated list as your call list when playing the game. There is no need to say the BINGO column name. Place some kind of mark (like an X, a checkmark, a dot, tally mark, etc) on each cell as you announce it, to keep track. You can also cut out each item, place them in a bag and pull words from the bag.


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  1. Find the HCF of 21 and 49.
    7
  2. Find the HCF of 30, 70, and 100.
    10
  3. Cut 10m and 12m ribbons into equal longest pieces.
    2
  4. What is the largest factor of 18?
    18
  5. Find the HCF of 48 and 60.
    12
  6. List the prime factors of 12.
    2,3
  7. Which factor of 20 is missing: 1, 2, __, 5, 10, 20?
    4
  8. Find the HCF of 28 and 70.
    14
  9. Tiles: Largest square tile for a 45m x 60m floor.
    15
  10. How many factors does the number 4 have?
    3
  11. Find the HCF of 18 and 30.
    6
  12. What is the HCF of 8 and 15?
    1
  13. List the prime factors of 35.
    5,7
  14. 18 blue and 27 red pens in equal sets. Max sets?
    9
  15. List all prime factors of 60.
    2,3,5
  16. What is the prime factor of 169?
    13
  17. List the prime factors of 50.
    2,5
  18. List the prime factors of 15.
    3,5
  19. Find the prime factor of 121.
    11
  20. List all the factors of 9.
    1,3,9
  21. 20 apples and 35 pears shared equally. Max people?
    5
  22. List the prime factors of 14.
    2,7
  23. List a factor of 32 that is between 10 and 20.
    16
  24. Find the HCF of 16 and 40.
    8