Mnemonics Worksheet: Chunking Numbers

Memory techniques lesson 10: Chunking numbers · Set 904 · 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 12-digit number is split into chunks of 4 digits each. How many chunks is that?
3. 3.📅 The digits 22122020 are a date: day, month, year. Which chunking shows the date? (a) 221/220/20 (b) 2212/20/20 (c) 22/12/2020 (d) 22/1220/20
4. 4.🔢 A 8-digit number is split into chunks of 4 digits each. How many chunks is that?
5. 5.🔢 A chunk is easiest to keep when it… (a) changes daily (b) is very long (c) has no pattern (d) means something to you
6. 6.🔢 You want to remember the number 562771276. Which chunked version keeps every digit in the same order? (a) 562 717 276 (b) 567 712 76 (c) 562 771 276 (d) 562 277 1276
7. 7.🔢 Chunking works for… (a) numbers and letter lists (b) nothing at all (c) only numbers (d) only pictures
8. 8.📅 The digits 27031954 are a date: day, month, year. Which chunking shows the date? (a) 2703/19/54 (b) 27/0319/54 (c) 27/03/1954 (d) 270/319/54
9. 9.🔢 You want to remember the number 103203400. Which chunked version keeps every digit in the same order? (a) 100 320 3400 (b) 103 203 400 (c) 032 034 00 (d) 103 204 300
10. 10.📅 The digits 06071967 are a date: day, month, year. Which chunking shows the date? (a) 0607/19/67 (b) 060/719/67 (c) 06/07/1967 (d) 06/0719/67
11. 11.📅 The digits 07021962 are a date: day, month, year. Which chunking shows the date? (a) 070/219/62 (b) 07/02/1962 (c) 0702/19/62 (d) 07/0219/62
12. 12.🔢 You want to remember the number 272590799409. Which chunked version keeps every digit in the same order? (a) 2725 9079 9409 (b) 2725 9079 94409 (c) 2259 0799 409 (d) 2725 9097 9409
13. 13.📅 The digits 03111956 are a date: day, month, year. Which chunking shows the date? (a) 0311/19/56 (b) 03/11/1956 (c) 031/119/56 (d) 03/1119/56
14. 14.🔢 What is chunking? (a) splitting into groups (b) saying it backwards (c) writing it twice (d) reading very fast
15. 15.🔢 You want to remember the number 123106179. Which chunked version keeps every digit in the same order? (a) 231 061 79 (b) 213 106 179 (c) 123 106 1799 (d) 123 106 179
16. 16.📅 The digits 23021982 are a date: day, month, year. Which chunking shows the date? (a) 2302/19/82 (b) 23/02/1982 (c) 230/219/82 (d) 23/0219/82
17. 17.🔢 You want to remember the number 6984356625. Which chunked version keeps every digit in the same order? (a) 698 435 66625 (b) 968 435 6625 (c) 698 435 6625 (d) 698 435 665
18. 18.🔢 You want to remember the number 8050746652. Which chunked version keeps every digit in the same order? (a) 805 507 46652 (b) 805 074 652 (c) 805 074 6652 (d) 805 074 6562
19. 19.🔢 You want to remember the number 497157020. Which chunked version keeps every digit in the same order? (a) 497 517 020 (b) 449 715 7020 (c) 497 157 020 (d) 497 157 20
20. 20.📅 The digits 23071993 are a date: day, month, year. Which chunking shows the date? (a) 2307/19/93 (b) 23/0719/93 (c) 23/07/1993 (d) 230/719/93
21. 21.🔢 Why is 987 654 3210 easier to hold than 9876543210? (a) it is a smaller number (b) it is printed bigger (c) three chunks, not ten (d) it has fewer digits
22. 22.🔢 Instead of holding 8 separate digits, you hold them as 4 chunks. How many fewer things do you hold in mind?
23. 23.🔢 Instead of holding 12 separate digits, you hold them as 4 chunks. How many fewer things do you hold in mind?
24. 24.🔢 You want to remember the number 240834301. Which chunked version keeps every digit in the same order? (a) 248 034 301 (b) 240 834 30 (c) 240 834 4301 (d) 240 834 301
25. 25.🔢 You want to remember the number 9592131678. Which chunked version keeps every digit in the same order? (a) 959 213 1678 (b) 959 211 678 (c) 959 213 6178 (d) 959 211 31678
26. 26.📅 The digits 05112000 are a date: day, month, year. Which chunking shows the date? (a) 0511/20/00 (b) 05/1120/00 (c) 051/120/00 (d) 05/11/2000
27. 27.🔢 You want to remember the number 454141509708. Which chunked version keeps every digit in the same order? (a) 4544 1415 09708 (b) 4541 4150 7908 (c) 4541 4150 978 (d) 4541 4150 9708
28. 28.🔢 Which is a good way to chunk the year 1947? (a) 1 and 947 (b) 194 and 7 (c) 1 9 4 7 (d) 19 and 47
29. 29.🔢 Instead of holding 11 separate digits, you hold them as 3 chunks. How many fewer things do you hold in mind?
30. 30.📅 The digits 27051982 are a date: day, month, year. Which chunking shows the date? (a) 270/519/82 (b) 27/05/1982 (c) 27/0519/82 (d) 2705/19/82
31. 31.📅 The digits 27111970 are a date: day, month, year. Which chunking shows the date? (a) 2711/19/70 (b) 271/119/70 (c) 27/1119/70 (d) 27/11/1970
32. 32.🔢 You want to remember the number 491308025. Which chunked version keeps every digit in the same order? (a) 491 130 8025 (b) 413 080 25 (c) 491 380 025 (d) 491 308 025
33. 33.📅 The digits 10012005 are a date: day, month, year. Which chunking shows the date? (a) 100/120/05 (b) 10/01/2005 (c) 10/0120/05 (d) 1001/20/05
34. 34.📅 The digits 28102023 are a date: day, month, year. Which chunking shows the date? (a) 281/020/23 (b) 2810/20/23 (c) 28/10/2023 (d) 28/1020/23
35. 35.🔢 You want to remember the number 850255814. Which chunked version keeps every digit in the same order? (a) 850 255 814 (b) 885 025 5814 (c) 805 255 814 (d) 502 558 14
36. 36.🔢 You want to remember the number 6758643857. Which chunked version keeps every digit in the same order? (a) 657 864 3857 (b) 678 643 857 (c) 675 864 3857 (d) 675 864 38577
37. 37.🔢 You want to remember the number 5481408670. Which chunked version keeps every digit in the same order? (a) 581 408 670 (b) 548 148 0670 (c) 548 140 8670 (d) 548 144 08670
38. 38.🔢 A 10-digit number is split into chunks of 2 digits each. How many chunks is that?
39. 39.🔢 You want to remember the number 2539225489. Which chunked version keeps every digit in the same order? (a) 539 225 489 (b) 253 922 4589 (c) 253 922 5489 (d) 253 392 25489
40. 40.🔢 A 12-digit number is split into chunks of 3 digits each. How many chunks is that?

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