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Mnemonics Worksheet: Chunking Numbers

Memory techniques lesson 10: Chunking numbers · Set 696 · 40 questions
TalentJR

Memory tip (Fewer, bigger pieces): Split long numbers into groups of 3 or 4: a 10-digit phone number as 3-3-4; a 12-digit number as 4-4-4. Dates: 2 digits for the day, 2 for the month, 4 for the year: 26011950 → 26/01/1950. Check every digit stays in the same order — chunks group digits, they never change them.

NameDateTime takenScore ___ / 40
  1. 1.🔢 You want to remember the number 480644140305. Which chunked version keeps every digit in the same order? (a) 4804 4140 305 (b) 4806 4414 0305 (c) 4806 4414 3005 (d) 4806 4441 40305
  2. 2.🔢 Why is 987 654 3210 easier to hold than 9876543210? (a) three chunks, not ten (b) it is a smaller number (c) it is printed bigger (d) it has fewer digits
  3. 3.🔢 Instead of holding 12 separate digits, you hold them as 3 chunks. How many fewer things do you hold in mind?
  4. 4.📅 The digits 07061966 are a date: day, month, year. Which chunking shows the date? (a) 070/619/66 (b) 0706/19/66 (c) 07/0619/66 (d) 07/06/1966
  5. 5.🔢 You want to remember the number 4178061414. Which chunked version keeps every digit in the same order? (a) 417 806 1414 (b) 417 806 141 (c) 417 860 1414 (d) 417 800 61414
  6. 6.📅 The digits 04121985 are a date: day, month, year. Which chunking shows the date? (a) 04/12/1985 (b) 0412/19/85 (c) 04/1219/85 (d) 041/219/85
  7. 7.🔢 A 8-digit number is split into chunks of 2 digits each. How many chunks is that?
  8. 8.🔢 Instead of holding 11 separate digits, you hold them as 4 chunks. How many fewer things do you hold in mind?
  9. 9.📅 The digits 05011968 are a date: day, month, year. Which chunking shows the date? (a) 050/119/68 (b) 05/0119/68 (c) 0501/19/68 (d) 05/01/1968
  10. 10.🔢 You want to remember the number 518020045082. Which chunked version keeps every digit in the same order? (a) 1802 0045 082 (b) 5180 2000 45082 (c) 5108 2004 5082 (d) 5180 2004 5082
  11. 11.🔢 You want to remember the number 519120690706. Which chunked version keeps every digit in the same order? (a) 5191 2006 90706 (b) 5191 2096 0706 (c) 5191 2069 0706 (d) 5192 0690 706
  12. 12.🔢 You want to remember the number 254652555533. Which chunked version keeps every digit in the same order? (a) 2546 5255 5533 (b) 2546 5255 553 (c) 2456 5255 5533 (d) 2546 5255 55533
  13. 13.🔢 You want to remember the number 902404738. Which chunked version keeps every digit in the same order? (a) 902 404 7388 (b) 902 404 738 (c) 920 404 738 (d) 902 404 38
  14. 14.📅 The digits 21091999 are a date: day, month, year. Which chunking shows the date? (a) 21/09/1999 (b) 21/0919/99 (c) 210/919/99 (d) 2109/19/99
  15. 15.🔢 You want to remember the number 244633874559. Which chunked version keeps every digit in the same order? (a) 2463 3874 559 (b) 2446 3387 4559 (c) 2443 6387 4559 (d) 2444 6338 74559
  16. 16.🔢 You want to remember the number 9073142433. Which chunked version keeps every digit in the same order? (a) 907 314 2433 (b) 907 341 2433 (c) 907 314 233 (d) 907 314 24433
  17. 17.🔢 A 9-digit number is split into chunks of 3 digits each. How many chunks is that?
  18. 18.📅 The digits 23011975 are a date: day, month, year. Which chunking shows the date? (a) 230/119/75 (b) 23/0119/75 (c) 23/01/1975 (d) 2301/19/75
  19. 19.🔢 A 16-digit number is split into chunks of 4 digits each. How many chunks is that?
  20. 20.📅 The digits 23052009 are a date: day, month, year. Which chunking shows the date? (a) 230/520/09 (b) 23/0520/09 (c) 23/05/2009 (d) 2305/20/09
  21. 21.🔢 You want to remember the number 859250433763. Which chunked version keeps every digit in the same order? (a) 8592 5403 3763 (b) 8592 2504 33763 (c) 8592 5043 3763 (d) 8592 0433 763
  22. 22.🔢 You want to remember the number 3609266026. Which chunked version keeps every digit in the same order? (a) 360 266 026 (b) 360 926 6026 (c) 336 092 66026 (d) 360 962 6026
  23. 23.🔢 Which is a good way to chunk the year 1947? (a) 19 and 47 (b) 1 9 4 7 (c) 194 and 7 (d) 1 and 947
  24. 24.🔢 A 20-digit number is split into chunks of 4 digits each. How many chunks is that?
  25. 25.📅 The digits 03032013 are a date: day, month, year. Which chunking shows the date? (a) 0303/20/13 (b) 030/320/13 (c) 03/0320/13 (d) 03/03/2013
  26. 26.🔢 A 4-digit number is split into chunks of 2 digits each. How many chunks is that?
  27. 27.🔢 You want to remember the number 5217223335. Which chunked version keeps every digit in the same order? (a) 251 722 3335 (b) 521 723 335 (c) 522 172 23335 (d) 521 722 3335
  28. 28.📅 The digits 04122025 are a date: day, month, year. Which chunking shows the date? (a) 0412/20/25 (b) 04/1220/25 (c) 04/12/2025 (d) 041/220/25
  29. 29.📅 The digits 25091985 are a date: day, month, year. Which chunking shows the date? (a) 250/919/85 (b) 25/09/1985 (c) 2509/19/85 (d) 25/0919/85
  30. 30.📅 The digits 21031987 are a date: day, month, year. Which chunking shows the date? (a) 21/03/1987 (b) 210/319/87 (c) 2103/19/87 (d) 21/0319/87
  31. 31.🔢 What is chunking? (a) saying it backwards (b) splitting into groups (c) writing it twice (d) reading very fast
  32. 32.🔢 Chunking works for… (a) only numbers (b) only pictures (c) nothing at all (d) numbers and letter lists
  33. 33.📅 The digits 21012015 are a date: day, month, year. Which chunking shows the date? (a) 210/120/15 (b) 21/01/2015 (c) 21/0120/15 (d) 2101/20/15
  34. 34.🔢 You want to remember the number 516164905. Which chunked version keeps every digit in the same order? (a) 516 149 05 (b) 516 614 905 (c) 551 616 4905 (d) 516 164 905
  35. 35.📅 The digits 28061980 are a date: day, month, year. Which chunking shows the date? (a) 2806/19/80 (b) 280/619/80 (c) 28/06/1980 (d) 28/0619/80
  36. 36.🔢 A 6-digit number is split into chunks of 3 digits each. How many chunks is that?
  37. 37.📅 The digits 22032019 are a date: day, month, year. Which chunking shows the date? (a) 22/0320/19 (b) 220/320/19 (c) 2203/20/19 (d) 22/03/2019
  38. 38.🔢 You want to remember the number 830017869. Which chunked version keeps every digit in the same order? (a) 830 018 769 (b) 830 017 869 (c) 830 001 7869 (d) 830 018 69
  39. 39.🔢 Instead of holding 10 separate digits, you hold them as 3 chunks. How many fewer things do you hold in mind?
  40. 40.🔢 You want to remember the number 726582983114. Which chunked version keeps every digit in the same order? (a) 7265 2983 114 (b) 7625 8298 3114 (c) 7226 5829 83114 (d) 7265 8298 3114

Answer key

  1. 4806 4414 0305
  2. three chunks, not ten
  3. 9
  4. 07/06/1966
  5. 417 806 1414
  6. 04/12/1985
  7. 4
  8. 7
  9. 05/01/1968
  10. 5180 2004 5082
  11. 5191 2069 0706
  12. 2546 5255 5533
  13. 902 404 738
  14. 21/09/1999
  15. 2446 3387 4559
  16. 907 314 2433
  17. 3
  18. 23/01/1975
  19. 4
  20. 23/05/2009
  21. 8592 5043 3763
  22. 360 926 6026
  23. 19 and 47
  24. 5
  25. 03/03/2013
  26. 2
  27. 521 722 3335
  28. 04/12/2025
  29. 25/09/1985
  30. 21/03/1987
  31. splitting into groups
  32. numbers and letter lists
  33. 21/01/2015
  34. 516 164 905
  35. 28/06/1980
  36. 2
  37. 22/03/2019
  38. 830 017 869
  39. 7
  40. 7265 8298 3114

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