Mnemonics Worksheet: Chunking Numbers

Memory techniques lesson 10: Chunking numbers · Set 396 · 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 12-digit number is split into chunks of 4 digits each. How many chunks is that?
2. 2.🔢 You want to remember the number 902404808. Which chunked version keeps every digit in the same order? (a) 902 404 808 (b) 902 404 88 (c) 902 404 4808 (d) 902 044 808
3. 3.📅 The digits 13101953 are a date: day, month, year. Which chunking shows the date? (a) 131/019/53 (b) 13/10/1953 (c) 1310/19/53 (d) 13/1019/53
4. 4.📅 The digits 04111984 are a date: day, month, year. Which chunking shows the date? (a) 04/1119/84 (b) 0411/19/84 (c) 041/119/84 (d) 04/11/1984
5. 5.🔢 Instead of holding 8 separate digits, you hold them as 4 chunks. How many fewer things do you hold in mind?
6. 6.🔢 You want to remember the number 108094606642. Which chunked version keeps every digit in the same order? (a) 1080 9460 6462 (b) 1080 9460 66642 (c) 1080 9460 664 (d) 1080 9460 6642
7. 7.🔢 You want to remember the number 5264534211. Which chunked version keeps every digit in the same order? (a) 526 453 2411 (b) 526 434 211 (c) 526 453 4211 (d) 526 445 34211
8. 8.📅 The digits 13031986 are a date: day, month, year. Which chunking shows the date? (a) 130/319/86 (b) 1303/19/86 (c) 13/03/1986 (d) 13/0319/86
9. 9.🔢 Instead of holding 11 separate digits, you hold them as 3 chunks. How many fewer things do you hold in mind?
10. 10.🔢 Instead of holding 10 separate digits, you hold them as 3 chunks. How many fewer things do you hold in mind?
11. 11.📅 The digits 14112025 are a date: day, month, year. Which chunking shows the date? (a) 14/1120/25 (b) 14/11/2025 (c) 1411/20/25 (d) 141/120/25
12. 12.🔢 A chunk is easiest to keep when it… (a) has no pattern (b) is very long (c) changes daily (d) means something to you
13. 13.📅 The digits 15051964 are a date: day, month, year. Which chunking shows the date? (a) 15/0519/64 (b) 150/519/64 (c) 1505/19/64 (d) 15/05/1964
14. 14.🔢 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
15. 15.🔢 Why is 987 654 3210 easier to hold than 9876543210? (a) it is printed bigger (b) it is a smaller number (c) three chunks, not ten (d) it has fewer digits
16. 16.🔢 A 6-digit number is split into chunks of 3 digits each. How many chunks is that?
17. 17.🔢 Instead of holding 9 separate digits, you hold them as 3 chunks. How many fewer things do you hold in mind?
18. 18.🔢 You want to remember the number 4769264638. Which chunked version keeps every digit in the same order? (a) 476 692 64638 (b) 476 926 4638 (c) 476 926 438 (d) 476 296 4638
19. 19.🔢 You want to remember the number 2002866062. Which chunked version keeps every digit in the same order? (a) 200 826 6062 (b) 200 288 66062 (c) 200 286 6062 (d) 202 866 062
20. 20.📅 The digits 05082025 are a date: day, month, year. Which chunking shows the date? (a) 05/0820/25 (b) 05/08/2025 (c) 050/820/25 (d) 0508/20/25
21. 21.🔢 A 16-digit number is split into chunks of 4 digits each. How many chunks is that?
22. 22.📅 The digits 21111968 are a date: day, month, year. Which chunking shows the date? (a) 211/119/68 (b) 21/11/1968 (c) 2111/19/68 (d) 21/1119/68
23. 23.📅 The digits 07061988 are a date: day, month, year. Which chunking shows the date? (a) 07/06/1988 (b) 0706/19/88 (c) 070/619/88 (d) 07/0619/88
24. 24.🔢 You want to remember the number 7923398381. Which chunked version keeps every digit in the same order? (a) 792 338 9381 (b) 792 339 8381 (c) 779 233 98381 (d) 792 339 881
25. 25.📅 The digits 23102000 are a date: day, month, year. Which chunking shows the date? (a) 231/020/00 (b) 23/10/2000 (c) 23/1020/00 (d) 2310/20/00
26. 26.🔢 You want to remember the number 571368187. Which chunked version keeps every digit in the same order? (a) 571 368 1887 (b) 513 681 87 (c) 571 368 187 (d) 573 168 187
27. 27.🔢 What is chunking? (a) saying it backwards (b) splitting into groups (c) reading very fast (d) writing it twice
28. 28.🔢 Chunking works for… (a) numbers and letter lists (b) nothing at all (c) only pictures (d) only numbers
29. 29.📅 The digits 21121997 are a date: day, month, year. Which chunking shows the date? (a) 21/1219/97 (b) 2112/19/97 (c) 211/219/97 (d) 21/12/1997
30. 30.🔢 A 12-digit number is split into chunks of 3 digits each. How many chunks is that?
31. 31.🔢 You want to remember the number 7523243822. Which chunked version keeps every digit in the same order? (a) 752 324 3822 (b) 752 342 3822 (c) 752 324 382 (d) 752 324 43822
32. 32.🔢 You want to remember the number 901065101. Which chunked version keeps every digit in the same order? (a) 901 061 501 (b) 010 651 01 (c) 901 065 101 (d) 900 106 5101
33. 33.🔢 A 4-digit number is split into chunks of 2 digits each. How many chunks is that?
34. 34.🔢 You want to remember the number 255198138953. Which chunked version keeps every digit in the same order? (a) 2551 9813 38953 (b) 2559 1813 8953 (c) 2551 9813 8953 (d) 2551 8138 953
35. 35.🔢 You want to remember the number 4612367196. Which chunked version keeps every digit in the same order? (a) 461 236 71196 (b) 461 236 7196 (c) 612 367 196 (d) 461 237 6196
36. 36.🔢 You want to remember the number 3950923890. Which chunked version keeps every digit in the same order? (a) 395 092 3890 (b) 395 009 23890 (c) 395 092 389 (d) 359 092 3890
37. 37.🔢 You want to remember the number 3862132653. Which chunked version keeps every digit in the same order? (a) 382 613 2653 (b) 386 213 653 (c) 386 213 2653 (d) 386 211 32653
38. 38.🔢 You want to remember the number 7532911834. Which chunked version keeps every digit in the same order? (a) 753 291 1843 (b) 732 911 834 (c) 753 291 1834 (d) 753 329 11834
39. 39.🔢 A 8-digit number is split into chunks of 2 digits each. How many chunks is that?
40. 40.🔢 Instead of holding 12 separate digits, you hold them as 4 chunks. How many fewer things do you hold in mind?

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