Mnemonics Worksheet: Chunking Numbers

Memory techniques lesson 10: Chunking numbers · Set 720 · 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.📅 The digits 15071972 are a date: day, month, year. Which chunking shows the date? (a) 150/719/72 (b) 15/0719/72 (c) 1507/19/72 (d) 15/07/1972
2. 2.🔢 Instead of holding 10 separate digits, you hold them as 4 chunks. How many fewer things do you hold in mind?
3. 3.📅 The digits 05072018 are a date: day, month, year. Which chunking shows the date? (a) 050/720/18 (b) 05/07/2018 (c) 05/0720/18 (d) 0507/20/18
4. 4.🔢 Instead of holding 8 separate digits, you hold them as 4 chunks. How many fewer things do you hold in mind?
5. 5.🔢 You want to remember the number 6373655625. Which chunked version keeps every digit in the same order? (a) 673 365 5625 (b) 637 365 55625 (c) 637 365 562 (d) 637 365 5625
6. 6.🔢 A chunk is easiest to keep when it… (a) is very long (b) has no pattern (c) changes daily (d) means something to you
7. 7.📅 The digits 28092021 are a date: day, month, year. Which chunking shows the date? (a) 28/0920/21 (b) 2809/20/21 (c) 28/09/2021 (d) 280/920/21
8. 8.📅 The digits 28122004 are a date: day, month, year. Which chunking shows the date? (a) 28/1220/04 (b) 2812/20/04 (c) 281/220/04 (d) 28/12/2004
9. 9.🔢 Why is 987 654 3210 easier to hold than 9876543210? (a) it has fewer digits (b) it is printed bigger (c) three chunks, not ten (d) it is a smaller number
10. 10.📅 The digits 08071958 are a date: day, month, year. Which chunking shows the date? (a) 080/719/58 (b) 0807/19/58 (c) 08/07/1958 (d) 08/0719/58
11. 11.🔢 You want to remember the number 543153960. Which chunked version keeps every digit in the same order? (a) 543 153 960 (b) 431 539 60 (c) 543 159 360 (d) 543 153 3960
12. 12.📅 The digits 03021970 are a date: day, month, year. Which chunking shows the date? (a) 0302/19/70 (b) 03/02/1970 (c) 030/219/70 (d) 03/0219/70
13. 13.🔢 You want to remember the number 780991903. Which chunked version keeps every digit in the same order? (a) 780 991 9033 (b) 780 999 03 (c) 780 999 103 (d) 780 991 903
14. 14.🔢 What is chunking? (a) reading very fast (b) writing it twice (c) saying it backwards (d) splitting into groups
15. 15.🔢 A 8-digit number is split into chunks of 4 digits each. How many chunks is that?
16. 16.📅 The digits 25052012 are a date: day, month, year. Which chunking shows the date? (a) 250/520/12 (b) 2505/20/12 (c) 25/0520/12 (d) 25/05/2012
17. 17.🔢 You want to remember the number 907894741. Which chunked version keeps every digit in the same order? (a) 078 947 41 (b) 907 889 4741 (c) 907 849 741 (d) 907 894 741
18. 18.🔢 Instead of holding 12 separate digits, you hold them as 3 chunks. How many fewer things do you hold in mind?
19. 19.🔢 Chunking works for… (a) nothing at all (b) numbers and letter lists (c) only numbers (d) only pictures
20. 20.📅 The digits 13061980 are a date: day, month, year. Which chunking shows the date? (a) 1306/19/80 (b) 13/0619/80 (c) 13/06/1980 (d) 130/619/80
21. 21.🔢 You want to remember the number 257141583226. Which chunked version keeps every digit in the same order? (a) 2571 4158 2326 (b) 2571 4158 32226 (c) 2571 4158 3226 (d) 2571 4583 226
22. 22.🔢 Instead of holding 12 separate digits, you hold them as 4 chunks. How many fewer things do you hold in mind?
23. 23.📅 The digits 21041956 are a date: day, month, year. Which chunking shows the date? (a) 2104/19/56 (b) 210/419/56 (c) 21/04/1956 (d) 21/0419/56
24. 24.🔢 You want to remember the number 743099290602. Which chunked version keeps every digit in the same order? (a) 7439 0929 0602 (b) 7430 9929 0602 (c) 7430 9290 602 (d) 7430 9929 06002
25. 25.🔢 You want to remember the number 822669663. Which chunked version keeps every digit in the same order? (a) 226 696 63 (b) 822 669 663 (c) 822 266 9663 (d) 826 269 663
26. 26.🔢 You want to remember the number 1633457899. Which chunked version keeps every digit in the same order? (a) 163 345 8799 (b) 163 345 7899 (c) 116 334 57899 (d) 163 345 799
27. 27.🔢 A 6-digit number is split into chunks of 2 digits each. How many chunks is that?
28. 28.🔢 Instead of holding 9 separate digits, you hold them as 4 chunks. How many fewer things do you hold in mind?
29. 29.🔢 Instead of holding 9 separate digits, you hold them as 3 chunks. How many fewer things do you hold in mind?
30. 30.🔢 You want to remember the number 558280890. Which chunked version keeps every digit in the same order? (a) 558 288 90 (b) 558 280 890 (c) 585 280 890 (d) 558 228 0890
31. 31.🔢 You want to remember the number 129862994. Which chunked version keeps every digit in the same order? (a) 128 629 94 (b) 129 862 949 (c) 129 862 994 (d) 112 986 2994
32. 32.🔢 You want to remember the number 121341364. Which chunked version keeps every digit in the same order? (a) 121 341 1364 (b) 211 341 364 (c) 121 341 364 (d) 121 343 64
33. 33.🔢 You want to remember the number 3033011638. Which chunked version keeps every digit in the same order? (a) 330 301 1638 (b) 330 330 11638 (c) 303 311 638 (d) 303 301 1638
34. 34.🔢 You want to remember the number 418128446796. Which chunked version keeps every digit in the same order? (a) 4181 2844 796 (b) 4181 2484 6796 (c) 4181 2844 6796 (d) 4181 2844 46796
35. 35.🔢 You want to remember the number 409905439. Which chunked version keeps every digit in the same order? (a) 409 990 5439 (b) 409 905 439 (c) 409 095 439 (d) 409 905 39
36. 36.📅 The digits 02071988 are a date: day, month, year. Which chunking shows the date? (a) 0207/19/88 (b) 02/07/1988 (c) 020/719/88 (d) 02/0719/88
37. 37.📅 The digits 08091956 are a date: day, month, year. Which chunking shows the date? (a) 08/09/1956 (b) 0809/19/56 (c) 080/919/56 (d) 08/0919/56
38. 38.🔢 You want to remember the number 252754126. Which chunked version keeps every digit in the same order? (a) 257 254 126 (b) 255 275 4126 (c) 252 754 126 (d) 252 754 12
39. 39.🔢 A 12-digit number is split into chunks of 3 digits each. How many chunks is that?
40. 40.🔢 A 20-digit number is split into chunks of 4 digits each. How many chunks is that?

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