Mnemonics Worksheet: Chunking Numbers
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.
NameDateTime takenScore ___ / 40
- 1.🔢 You want to remember the number 700084974707. Which chunked version keeps every digit in the same order? (a) 7000 8497 470 (b) 7000 8497 4770 (c) 7000 8497 4707 (d) 7000 8497 74707
- 2.🔢 You want to remember the number 8866983637. Which chunked version keeps every digit in the same order? (a) 886 669 83637 (b) 886 698 3637 (c) 866 983 637 (d) 886 968 3637
- 3.🔢 You want to remember the number 348220231102. Which chunked version keeps every digit in the same order? (a) 3482 2023 1102 (b) 4822 0231 102 (c) 3428 2023 1102 (d) 3482 2023 11102
- 4.🔢 Why is 987 654 3210 easier to hold than 9876543210? (a) it has fewer digits (b) it is a smaller number (c) three chunks, not ten (d) it is printed bigger
- 5.📅 The digits 26061951 are a date: day, month, year. Which chunking shows the date? (a) 260/619/51 (b) 26/0619/51 (c) 26/06/1951 (d) 2606/19/51
- 6.📅 The digits 17062000 are a date: day, month, year. Which chunking shows the date? (a) 17/06/2000 (b) 170/620/00 (c) 1706/20/00 (d) 17/0620/00
- 7.🔢 You want to remember the number 453966475753. Which chunked version keeps every digit in the same order? (a) 4539 6647 5753 (b) 4539 6475 753 (c) 4539 6647 7553 (d) 4453 9664 75753
- 8.🔢 You want to remember the number 6326901198. Which chunked version keeps every digit in the same order? (a) 633 269 01198 (b) 632 690 1198 (c) 636 901 198 (d) 632 691 0198
- 9.🔢 You want to remember the number 522824915. Which chunked version keeps every digit in the same order? (a) 228 249 15 (b) 522 824 915 (c) 522 824 4915 (d) 522 824 951
- 10.🔢 What is chunking? (a) writing it twice (b) saying it backwards (c) reading very fast (d) splitting into groups
- 11.📅 The digits 06051983 are a date: day, month, year. Which chunking shows the date? (a) 0605/19/83 (b) 06/0519/83 (c) 06/05/1983 (d) 060/519/83
- 12.🔢 A 6-digit number is split into chunks of 3 digits each. How many chunks is that?
- 13.📅 The digits 15082011 are a date: day, month, year. Which chunking shows the date? (a) 15/08/2011 (b) 15/0820/11 (c) 1508/20/11 (d) 150/820/11
- 14.🔢 Instead of holding 9 separate digits, you hold them as 4 chunks. How many fewer things do you hold in mind?
- 15.📅 The digits 27052015 are a date: day, month, year. Which chunking shows the date? (a) 270/520/15 (b) 27/0520/15 (c) 2705/20/15 (d) 27/05/2015
- 16.🔢 You want to remember the number 4099719760. Which chunked version keeps every digit in the same order? (a) 409 971 9670 (b) 409 971 9760 (c) 409 997 19760 (d) 499 719 760
- 17.🔢 You want to remember the number 927962702421. Which chunked version keeps every digit in the same order? (a) 9279 6720 2421 (b) 9279 6270 2421 (c) 9279 6202 421 (d) 9279 6627 02421
- 18.📅 The digits 07071950 are a date: day, month, year. Which chunking shows the date? (a) 07/0719/50 (b) 0707/19/50 (c) 07/07/1950 (d) 070/719/50
- 19.📅 The digits 07012003 are a date: day, month, year. Which chunking shows the date? (a) 0701/20/03 (b) 070/120/03 (c) 07/01/2003 (d) 07/0120/03
- 20.🔢 You want to remember the number 1715509831. Which chunked version keeps every digit in the same order? (a) 175 150 9831 (b) 171 550 9831 (c) 715 509 831 (d) 117 155 09831
- 21.🔢 A 9-digit number is split into chunks of 3 digits each. How many chunks is that?
- 22.📅 The digits 12022024 are a date: day, month, year. Which chunking shows the date? (a) 12/02/2024 (b) 1202/20/24 (c) 120/220/24 (d) 12/0220/24
- 23.🔢 Instead of holding 8 separate digits, you hold them as 4 chunks. How many fewer things do you hold in mind?
- 24.🔢 Chunking works for… (a) numbers and letter lists (b) only numbers (c) nothing at all (d) only pictures
- 25.🔢 Instead of holding 11 separate digits, you hold them as 4 chunks. How many fewer things do you hold in mind?
- 26.🔢 A 10-digit number is split into chunks of 2 digits each. How many chunks is that?
- 27.🔢 You want to remember the number 731030510. Which chunked version keeps every digit in the same order? (a) 731 003 0510 (b) 730 305 10 (c) 730 130 510 (d) 731 030 510
- 28.🔢 A 12-digit number is split into chunks of 4 digits each. How many chunks is that?
- 29.🔢 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
- 30.🔢 You want to remember the number 220652411. Which chunked version keeps every digit in the same order? (a) 220 652 11 (b) 220 652 4411 (c) 226 052 411 (d) 220 652 411
- 31.📅 The digits 21072000 are a date: day, month, year. Which chunking shows the date? (a) 21/0720/00 (b) 21/07/2000 (c) 2107/20/00 (d) 210/720/00
- 32.🔢 You want to remember the number 5416938727. Which chunked version keeps every digit in the same order? (a) 541 698 727 (b) 541 963 8727 (c) 541 693 8727 (d) 544 169 38727
- 33.🔢 You want to remember the number 808981665738. Which chunked version keeps every digit in the same order? (a) 8089 8166 57388 (b) 8098 8166 5738 (c) 8098 1665 738 (d) 8089 8166 5738
- 34.🔢 You want to remember the number 7526053918. Which chunked version keeps every digit in the same order? (a) 752 605 391 (b) 572 605 3918 (c) 752 605 3918 (d) 752 600 53918
- 35.📅 The digits 22011989 are a date: day, month, year. Which chunking shows the date? (a) 220/119/89 (b) 22/01/1989 (c) 22/0119/89 (d) 2201/19/89
- 36.🔢 You want to remember the number 782421883. Which chunked version keeps every digit in the same order? (a) 782 428 183 (b) 782 421 88 (c) 782 421 883 (d) 782 422 1883
- 37.🔢 You want to remember the number 962022391431. Which chunked version keeps every digit in the same order? (a) 9620 2293 1431 (b) 9620 2239 1431 (c) 9620 2239 14331 (d) 9620 2239 143
- 38.🔢 You want to remember the number 2570659105. Which chunked version keeps every digit in the same order? (a) 527 065 9105 (b) 257 059 105 (c) 257 065 59105 (d) 257 065 9105
- 39.🔢 You want to remember the number 619833377311. Which chunked version keeps every digit in the same order? (a) 6198 3337 731 (b) 6198 3337 73111 (c) 6198 3373 7311 (d) 6198 3337 7311
- 40.📅 The digits 19061991 are a date: day, month, year. Which chunking shows the date? (a) 1906/19/91 (b) 190/619/91 (c) 19/06/1991 (d) 19/0619/91
Answer key
- 7000 8497 4707
- 886 698 3637
- 3482 2023 1102
- three chunks, not ten
- 26/06/1951
- 17/06/2000
- 4539 6647 5753
- 632 690 1198
- 522 824 915
- splitting into groups
- 06/05/1983
- 2
- 15/08/2011
- 5
- 27/05/2015
- 409 971 9760
- 9279 6270 2421
- 07/07/1950
- 07/01/2003
- 171 550 9831
- 3
- 12/02/2024
- 4
- numbers and letter lists
- 7
- 5
- 731 030 510
- 3
- 19 and 47
- 220 652 411
- 21/07/2000
- 541 693 8727
- 8089 8166 5738
- 752 605 3918
- 22/01/1989
- 782 421 883
- 9620 2239 1431
- 257 065 9105
- 6198 3337 7311
- 19/06/1991
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