Mnemonics Worksheet: Chunking Numbers

Memory techniques lesson 10: Chunking numbers · Set 86 · 40 questions

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.

1. 1.🔢 A 15-digit number is split into chunks of 3 digits each. How many chunks is that?
2. 2.🔢 A 9-digit number is split into chunks of 3 digits each. How many chunks is that?
3. 3.🔢 What is chunking? (a) reading very fast (b) saying it backwards (c) splitting into groups (d) writing it twice
4. 4.🔢 You want to remember the number 584436498222. Which chunked version keeps every digit in the same order? (a) 5844 3644 98222 (b) 5844 3649 8222 (c) 5844 3648 9222 (d) 5844 6498 222
5. 5.🔢 Which is a good way to chunk the year 1947? (a) 1 and 947 (b) 1 9 4 7 (c) 194 and 7 (d) 19 and 47
6. 6.🔢 Why is 987 654 3210 easier to hold than 9876543210? (a) three chunks, not ten (b) it has fewer digits (c) it is printed bigger (d) it is a smaller number
7. 7.🔢 Chunking works for… (a) nothing at all (b) only numbers (c) numbers and letter lists (d) only pictures
8. 8.📅 The digits 10051953 are a date: day, month, year. Which chunking shows the date? (a) 10/05/1953 (b) 1005/19/53 (c) 100/519/53 (d) 10/0519/53
9. 9.🔢 You want to remember the number 7244290564. Which chunked version keeps every digit in the same order? (a) 724 490 564 (b) 724 492 0564 (c) 724 422 90564 (d) 724 429 0564
10. 10.🔢 A 20-digit number is split into chunks of 4 digits each. How many chunks is that?
11. 11.📅 The digits 11121965 are a date: day, month, year. Which chunking shows the date? (a) 11/1219/65 (b) 11/12/1965 (c) 111/219/65 (d) 1112/19/65
12. 12.🔢 You want to remember the number 4817209026. Which chunked version keeps every digit in the same order? (a) 481 702 9026 (b) 487 209 026 (c) 481 172 09026 (d) 481 720 9026
13. 13.🔢 A 10-digit number is split into chunks of 2 digits each. How many chunks is that?
14. 14.🔢 A 6-digit number is split into chunks of 3 digits each. How many chunks is that?
15. 15.📅 The digits 05031961 are a date: day, month, year. Which chunking shows the date? (a) 0503/19/61 (b) 050/319/61 (c) 05/03/1961 (d) 05/0319/61
16. 16.🔢 Instead of holding 11 separate digits, you hold them as 4 chunks. How many fewer things do you hold in mind?
17. 17.📅 The digits 17012016 are a date: day, month, year. Which chunking shows the date? (a) 1701/20/16 (b) 17/0120/16 (c) 170/120/16 (d) 17/01/2016
18. 18.🔢 You want to remember the number 527311361. Which chunked version keeps every digit in the same order? (a) 522 731 1361 (b) 527 313 61 (c) 527 311 361 (d) 527 311 631
19. 19.🔢 You want to remember the number 259418821. Which chunked version keeps every digit in the same order? (a) 259 418 821 (b) 225 941 8821 (c) 259 418 21 (d) 259 418 281
20. 20.📅 The digits 06052025 are a date: day, month, year. Which chunking shows the date? (a) 06/0520/25 (b) 0605/20/25 (c) 060/520/25 (d) 06/05/2025
21. 21.📅 The digits 07121969 are a date: day, month, year. Which chunking shows the date? (a) 071/219/69 (b) 07/1219/69 (c) 0712/19/69 (d) 07/12/1969
22. 22.🔢 Instead of holding 10 separate digits, you hold them as 4 chunks. How many fewer things do you hold in mind?
23. 23.🔢 A 8-digit number is split into chunks of 4 digits each. How many chunks is that?
24. 24.🔢 Instead of holding 9 separate digits, you hold them as 4 chunks. How many fewer things do you hold in mind?
25. 25.📅 The digits 02102023 are a date: day, month, year. Which chunking shows the date? (a) 02/1020/23 (b) 02/10/2023 (c) 0210/20/23 (d) 021/020/23
26. 26.📅 The digits 11031991 are a date: day, month, year. Which chunking shows the date? (a) 1103/19/91 (b) 11/0319/91 (c) 110/319/91 (d) 11/03/1991
27. 27.🔢 You want to remember the number 361556432. Which chunked version keeps every digit in the same order? (a) 361 556 4432 (b) 365 156 432 (c) 361 556 432 (d) 361 554 32
28. 28.🔢 Instead of holding 12 separate digits, you hold them as 3 chunks. How many fewer things do you hold in mind?
29. 29.🔢 A 8-digit number is split into chunks of 2 digits each. How many chunks is that?
30. 30.🔢 You want to remember the number 1815740728. Which chunked version keeps every digit in the same order? (a) 181 557 40728 (b) 181 574 728 (c) 181 574 7028 (d) 181 574 0728
31. 31.🔢 You want to remember the number 687435943235. Which chunked version keeps every digit in the same order? (a) 6873 5943 235 (b) 6873 4594 3235 (c) 6874 3594 33235 (d) 6874 3594 3235
32. 32.📅 The digits 28121958 are a date: day, month, year. Which chunking shows the date? (a) 28/12/1958 (b) 2812/19/58 (c) 28/1219/58 (d) 281/219/58
33. 33.📅 The digits 04051963 are a date: day, month, year. Which chunking shows the date? (a) 04/05/1963 (b) 0405/19/63 (c) 04/0519/63 (d) 040/519/63
34. 34.🔢 You want to remember the number 4098283844. Which chunked version keeps every digit in the same order? (a) 409 982 83844 (b) 049 828 3844 (c) 409 828 3844 (d) 498 283 844
35. 35.🔢 You want to remember the number 827889102. Which chunked version keeps every digit in the same order? (a) 287 889 102 (b) 827 889 10 (c) 827 889 1002 (d) 827 889 102
36. 36.🔢 You want to remember the number 381556647621. Which chunked version keeps every digit in the same order? (a) 3815 5664 7612 (b) 3815 5666 47621 (c) 3815 5664 7621 (d) 3855 6647 621
37. 37.🔢 Instead of holding 12 separate digits, you hold them as 4 chunks. How many fewer things do you hold in mind?
38. 38.🔢 Instead of holding 11 separate digits, you hold them as 3 chunks. How many fewer things do you hold in mind?
39. 39.🔢 You want to remember the number 139174219361. Which chunked version keeps every digit in the same order? (a) 1397 4219 361 (b) 1391 7742 19361 (c) 1391 7421 9361 (d) 3191 7421 9361
40. 40.🔢 You want to remember the number 1632446270. Which chunked version keeps every digit in the same order? (a) 613 244 6270 (b) 163 244 6270 (c) 163 244 620 (d) 163 244 62700

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