Mnemonics Worksheet: Chunking Numbers

Memory techniques lesson 10: Chunking numbers · Set 441 · 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 16-digit number is split into chunks of 4 digits each. How many chunks is that?
2. 2.🔢 Chunking works for… (a) only numbers (b) numbers and letter lists (c) only pictures (d) nothing at all
3. 3.🔢 Which is a good way to chunk the year 1947? (a) 1 9 4 7 (b) 1 and 947 (c) 19 and 47 (d) 194 and 7
4. 4.🔢 Instead of holding 12 separate digits, you hold them as 4 chunks. How many fewer things do you hold in mind?
5. 5.📅 The digits 16031998 are a date: day, month, year. Which chunking shows the date? (a) 1603/19/98 (b) 160/319/98 (c) 16/03/1998 (d) 16/0319/98
6. 6.🔢 You want to remember the number 5959677602. Which chunked version keeps every digit in the same order? (a) 595 596 77602 (b) 599 677 602 (c) 595 967 7602 (d) 955 967 7602
7. 7.🔢 You want to remember the number 1232344456. Which chunked version keeps every digit in the same order? (a) 123 234 4456 (b) 112 323 44456 (c) 123 234 456 (d) 213 234 4456
8. 8.🔢 A 9-digit number is split into chunks of 3 digits each. How many chunks is that?
9. 9.🔢 You want to remember the number 409075969. Which chunked version keeps every digit in the same order? (a) 409 075 969 (b) 409 705 969 (c) 409 075 9669 (d) 409 075 69
10. 10.🔢 You want to remember the number 6862491067. Which chunked version keeps every digit in the same order? (a) 686 249 1067 (b) 686 249 107 (c) 668 624 91067 (d) 686 429 1067
11. 11.📅 The digits 13071999 are a date: day, month, year. Which chunking shows the date? (a) 13/07/1999 (b) 130/719/99 (c) 1307/19/99 (d) 13/0719/99
12. 12.🔢 You want to remember the number 200651361. Which chunked version keeps every digit in the same order? (a) 200 651 361 (b) 200 653 161 (c) 200 651 3661 (d) 206 513 61
13. 13.🔢 You want to remember the number 3816424823. Which chunked version keeps every digit in the same order? (a) 381 642 4832 (b) 381 642 24823 (c) 381 644 823 (d) 381 642 4823
14. 14.📅 The digits 10061954 are a date: day, month, year. Which chunking shows the date? (a) 10/0619/54 (b) 100/619/54 (c) 10/06/1954 (d) 1006/19/54
15. 15.📅 The digits 26042010 are a date: day, month, year. Which chunking shows the date? (a) 26/0420/10 (b) 260/420/10 (c) 26/04/2010 (d) 2604/20/10
16. 16.🔢 You want to remember the number 9512004980. Which chunked version keeps every digit in the same order? (a) 951 020 4980 (b) 951 200 4980 (c) 951 200 44980 (d) 512 004 980
17. 17.🔢 What is chunking? (a) writing it twice (b) reading very fast (c) saying it backwards (d) splitting into groups
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.🔢 Why is 987 654 3210 easier to hold than 9876543210? (a) it has fewer digits (b) three chunks, not ten (c) it is printed bigger (d) it is a smaller number
20. 20.🔢 You want to remember the number 550892901713. Which chunked version keeps every digit in the same order? (a) 5508 9290 1713 (b) 5508 9290 7113 (c) 5550 8929 01713 (d) 5508 9201 713
21. 21.🔢 Instead of holding 12 separate digits, you hold them as 3 chunks. How many fewer things do you hold in mind?
22. 22.📅 The digits 06111952 are a date: day, month, year. Which chunking shows the date? (a) 06/11/1952 (b) 061/119/52 (c) 06/1119/52 (d) 0611/19/52
23. 23.📅 The digits 07041956 are a date: day, month, year. Which chunking shows the date? (a) 070/419/56 (b) 07/0419/56 (c) 07/04/1956 (d) 0704/19/56
24. 24.🔢 You want to remember the number 1903520257. Which chunked version keeps every digit in the same order? (a) 190 352 0257 (b) 190 035 20257 (c) 190 520 257 (d) 190 352 2057
25. 25.🔢 A 4-digit number is split into chunks of 2 digits each. How many chunks is that?
26. 26.🔢 A 12-digit number is split into chunks of 3 digits each. How many chunks is that?
27. 27.🔢 A 12-digit number is split into chunks of 4 digits each. How many chunks is that?
28. 28.🔢 A 10-digit number is split into chunks of 2 digits each. How many chunks is that?
29. 29.🔢 You want to remember the number 300339350771. Which chunked version keeps every digit in the same order? (a) 3003 3393 50771 (b) 3003 3935 7071 (c) 3003 3935 0771 (d) 3003 9350 771
30. 30.🔢 You want to remember the number 621569477460. Which chunked version keeps every digit in the same order? (a) 6215 6947 7460 (b) 6125 6947 7460 (c) 6215 6947 746 (d) 6215 6694 77460
31. 31.📅 The digits 23032017 are a date: day, month, year. Which chunking shows the date? (a) 2303/20/17 (b) 23/0320/17 (c) 23/03/2017 (d) 230/320/17
32. 32.📅 The digits 21092021 are a date: day, month, year. Which chunking shows the date? (a) 21/0920/21 (b) 210/920/21 (c) 2109/20/21 (d) 21/09/2021
33. 33.🔢 You want to remember the number 975856510792. Which chunked version keeps every digit in the same order? (a) 9975 8565 10792 (b) 9785 6510 792 (c) 9758 5651 0792 (d) 9758 5651 0972
34. 34.🔢 You want to remember the number 163006862. Which chunked version keeps every digit in the same order? (a) 163 006 826 (b) 163 068 62 (c) 163 300 6862 (d) 163 006 862
35. 35.📅 The digits 06012023 are a date: day, month, year. Which chunking shows the date? (a) 06/0120/23 (b) 0601/20/23 (c) 06/01/2023 (d) 060/120/23
36. 36.🔢 You want to remember the number 146784217. Which chunked version keeps every digit in the same order? (a) 146 784 27 (b) 144 678 4217 (c) 146 784 217 (d) 147 684 217
37. 37.📅 The digits 25112016 are a date: day, month, year. Which chunking shows the date? (a) 2511/20/16 (b) 251/120/16 (c) 25/11/2016 (d) 25/1120/16
38. 38.🔢 You want to remember the number 312871117. Which chunked version keeps every digit in the same order? (a) 312 871 17 (b) 331 287 1117 (c) 312 871 117 (d) 132 871 117
39. 39.🔢 You want to remember the number 9837420896. Which chunked version keeps every digit in the same order? (a) 983 740 896 (b) 983 742 08996 (c) 983 742 0869 (d) 983 742 0896
40. 40.🔢 You want to remember the number 8258018513. Which chunked version keeps every digit in the same order? (a) 828 501 8513 (b) 825 801 8513 (c) 828 018 513 (d) 825 880 18513

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