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Mnemonics Worksheet: Chunking Numbers

Memory techniques lesson 10: Chunking numbers · Set 623 · 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.🔢 Chunking works for… (a) only numbers (b) only pictures (c) numbers and letter lists (d) nothing at all
  2. 2.📅 The digits 17021954 are a date: day, month, year. Which chunking shows the date? (a) 17/02/1954 (b) 1702/19/54 (c) 17/0219/54 (d) 170/219/54
  3. 3.🔢 You want to remember the number 175046919. Which chunked version keeps every digit in the same order? (a) 175 046 919 (b) 117 504 6919 (c) 175 046 91 (d) 170 546 919
  4. 4.🔢 A 15-digit number is split into chunks of 3 digits each. How many chunks is that?
  5. 5.🔢 What is chunking? (a) saying it backwards (b) writing it twice (c) reading very fast (d) splitting into groups
  6. 6.📅 The digits 08011970 are a date: day, month, year. Which chunking shows the date? (a) 080/119/70 (b) 0801/19/70 (c) 08/0119/70 (d) 08/01/1970
  7. 7.📅 The digits 08031981 are a date: day, month, year. Which chunking shows the date? (a) 080/319/81 (b) 08/0319/81 (c) 0803/19/81 (d) 08/03/1981
  8. 8.🔢 A 4-digit number is split into chunks of 2 digits each. How many chunks is that?
  9. 9.📅 The digits 05101963 are a date: day, month, year. Which chunking shows the date? (a) 051/019/63 (b) 05/10/1963 (c) 05/1019/63 (d) 0510/19/63
  10. 10.🔢 Which is a good way to chunk the year 1947? (a) 194 and 7 (b) 19 and 47 (c) 1 and 947 (d) 1 9 4 7
  11. 11.🔢 Instead of holding 12 separate digits, you hold them as 4 chunks. How many fewer things do you hold in mind?
  12. 12.📅 The digits 07071999 are a date: day, month, year. Which chunking shows the date? (a) 07/07/1999 (b) 070/719/99 (c) 0707/19/99 (d) 07/0719/99
  13. 13.🔢 You want to remember the number 4104805506. Which chunked version keeps every digit in the same order? (a) 410 480 556 (b) 410 480 5506 (c) 410 480 55066 (d) 140 480 5506
  14. 14.📅 The digits 19041985 are a date: day, month, year. Which chunking shows the date? (a) 19/04/1985 (b) 190/419/85 (c) 19/0419/85 (d) 1904/19/85
  15. 15.🔢 A 10-digit number is split into chunks of 2 digits each. How many chunks is that?
  16. 16.🔢 Why is 987 654 3210 easier to hold than 9876543210? (a) three chunks, not ten (b) it is a smaller number (c) it has fewer digits (d) it is printed bigger
  17. 17.🔢 A 20-digit number is split into chunks of 4 digits each. How many chunks is that?
  18. 18.🔢 Instead of holding 8 separate digits, you hold them as 4 chunks. How many fewer things do you hold in mind?
  19. 19.🔢 Instead of holding 12 separate digits, you hold them as 3 chunks. How many fewer things do you hold in mind?
  20. 20.🔢 A 8-digit number is split into chunks of 4 digits each. How many chunks is that?
  21. 21.🔢 A chunk is easiest to keep when it… (a) changes daily (b) means something to you (c) has no pattern (d) is very long
  22. 22.📅 The digits 26072025 are a date: day, month, year. Which chunking shows the date? (a) 2607/20/25 (b) 26/07/2025 (c) 26/0720/25 (d) 260/720/25
  23. 23.🔢 You want to remember the number 347420195. Which chunked version keeps every digit in the same order? (a) 347 742 0195 (b) 374 420 195 (c) 347 420 195 (d) 474 201 95
  24. 24.📅 The digits 26071977 are a date: day, month, year. Which chunking shows the date? (a) 260/719/77 (b) 26/07/1977 (c) 26/0719/77 (d) 2607/19/77
  25. 25.🔢 You want to remember the number 326989838427. Which chunked version keeps every digit in the same order? (a) 3269 8983 842 (b) 3269 8983 8427 (c) 3269 9898 38427 (d) 3269 8988 3427
  26. 26.🔢 You want to remember the number 1339810258. Which chunked version keeps every digit in the same order? (a) 133 988 10258 (b) 133 981 0258 (c) 133 980 258 (d) 133 980 1258
  27. 27.🔢 A 8-digit number is split into chunks of 2 digits each. How many chunks is that?
  28. 28.📅 The digits 07072013 are a date: day, month, year. Which chunking shows the date? (a) 0707/20/13 (b) 070/720/13 (c) 07/07/2013 (d) 07/0720/13
  29. 29.📅 The digits 06021969 are a date: day, month, year. Which chunking shows the date? (a) 06/0219/69 (b) 060/219/69 (c) 0602/19/69 (d) 06/02/1969
  30. 30.🔢 You want to remember the number 2915507211. Which chunked version keeps every digit in the same order? (a) 291 550 7121 (b) 291 550 72111 (c) 295 507 211 (d) 291 550 7211
  31. 31.🔢 You want to remember the number 566371565569. Which chunked version keeps every digit in the same order? (a) 5663 7156 65569 (b) 5663 7156 5569 (c) 5663 1756 5569 (d) 5637 1565 569
  32. 32.🔢 You want to remember the number 4155247068. Which chunked version keeps every digit in the same order? (a) 451 524 7068 (b) 415 524 7068 (c) 415 527 068 (d) 415 552 47068
  33. 33.🔢 You want to remember the number 280022620931. Which chunked version keeps every digit in the same order? (a) 8002 2620 931 (b) 2800 2262 0931 (c) 2800 2262 9031 (d) 2280 0226 20931
  34. 34.📅 The digits 11121989 are a date: day, month, year. Which chunking shows the date? (a) 11/1219/89 (b) 1112/19/89 (c) 111/219/89 (d) 11/12/1989
  35. 35.🔢 You want to remember the number 636048510. Which chunked version keeps every digit in the same order? (a) 636 084 510 (b) 636 044 8510 (c) 636 048 510 (d) 636 048 10
  36. 36.🔢 Instead of holding 9 separate digits, you hold them as 3 chunks. How many fewer things do you hold in mind?
  37. 37.🔢 You want to remember the number 538940670688. Which chunked version keeps every digit in the same order? (a) 3589 4067 0688 (b) 5389 4006 70688 (c) 5389 4067 068 (d) 5389 4067 0688
  38. 38.📅 The digits 05112000 are a date: day, month, year. Which chunking shows the date? (a) 051/120/00 (b) 0511/20/00 (c) 05/1120/00 (d) 05/11/2000
  39. 39.📅 The digits 01122002 are a date: day, month, year. Which chunking shows the date? (a) 011/220/02 (b) 01/1220/02 (c) 01/12/2002 (d) 0112/20/02
  40. 40.🔢 You want to remember the number 705075797. Which chunked version keeps every digit in the same order? (a) 750 075 797 (b) 705 075 5797 (c) 705 075 797 (d) 705 075 77

Answer key

  1. numbers and letter lists
  2. 17/02/1954
  3. 175 046 919
  4. 5
  5. splitting into groups
  6. 08/01/1970
  7. 08/03/1981
  8. 2
  9. 05/10/1963
  10. 19 and 47
  11. 8
  12. 07/07/1999
  13. 410 480 5506
  14. 19/04/1985
  15. 5
  16. three chunks, not ten
  17. 5
  18. 4
  19. 9
  20. 2
  21. means something to you
  22. 26/07/2025
  23. 347 420 195
  24. 26/07/1977
  25. 3269 8983 8427
  26. 133 981 0258
  27. 4
  28. 07/07/2013
  29. 06/02/1969
  30. 291 550 7211
  31. 5663 7156 5569
  32. 415 524 7068
  33. 2800 2262 0931
  34. 11/12/1989
  35. 636 048 510
  36. 6
  37. 5389 4067 0688
  38. 05/11/2000
  39. 01/12/2002
  40. 705 075 797

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