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.📅 The digits 15062000 are a date: day, month, year. Which chunking shows the date? (a) 1506/20/00 (b) 15/0620/00 (c) 15/06/2000 (d) 150/620/00
- 2.🔢 You want to remember the number 4346976138. Which chunked version keeps every digit in the same order? (a) 434 697 61138 (b) 434 967 6138 (c) 434 697 6138 (d) 434 696 138
- 3.🔢 A 6-digit number is split into chunks of 3 digits each. How many chunks is that?
- 4.🔢 You want to remember the number 848366139574. Which chunked version keeps every digit in the same order? (a) 8483 6613 9574 (b) 8848 3661 39574 (c) 8483 6613 9547 (d) 8836 6139 574
- 5.📅 The digits 07111954 are a date: day, month, year. Which chunking shows the date? (a) 07/1119/54 (b) 07/11/1954 (c) 071/119/54 (d) 0711/19/54
- 6.🔢 Instead of holding 12 separate digits, you hold them as 4 chunks. How many fewer things do you hold in mind?
- 7.📅 The digits 11061973 are a date: day, month, year. Which chunking shows the date? (a) 110/619/73 (b) 11/0619/73 (c) 1106/19/73 (d) 11/06/1973
- 8.📅 The digits 21021990 are a date: day, month, year. Which chunking shows the date? (a) 210/219/90 (b) 2102/19/90 (c) 21/02/1990 (d) 21/0219/90
- 9.🔢 A 10-digit number is split into chunks of 2 digits each. How many chunks is that?
- 10.🔢 Instead of holding 10 separate digits, you hold them as 3 chunks. How many fewer things do you hold in mind?
- 11.📅 The digits 16061999 are a date: day, month, year. Which chunking shows the date? (a) 160/619/99 (b) 16/06/1999 (c) 1606/19/99 (d) 16/0619/99
- 12.🔢 You want to remember the number 1656668230. Which chunked version keeps every digit in the same order? (a) 165 666 8320 (b) 165 666 820 (c) 165 666 82230 (d) 165 666 8230
- 13.🔢 You want to remember the number 911413987. Which chunked version keeps every digit in the same order? (a) 914 139 87 (b) 911 141 3987 (c) 911 419 387 (d) 911 413 987
- 14.📅 The digits 03071963 are a date: day, month, year. Which chunking shows the date? (a) 0307/19/63 (b) 030/719/63 (c) 03/0719/63 (d) 03/07/1963
- 15.📅 The digits 27081986 are a date: day, month, year. Which chunking shows the date? (a) 2708/19/86 (b) 27/08/1986 (c) 270/819/86 (d) 27/0819/86
- 16.📅 The digits 13052023 are a date: day, month, year. Which chunking shows the date? (a) 13/05/2023 (b) 13/0520/23 (c) 130/520/23 (d) 1305/20/23
- 17.🔢 A 4-digit number is split into chunks of 2 digits each. How many chunks is that?
- 18.🔢 You want to remember the number 583440720231. Which chunked version keeps every digit in the same order? (a) 5834 4072 02331 (b) 5834 0472 0231 (c) 5834 0720 231 (d) 5834 4072 0231
- 19.🔢 You want to remember the number 7236178451. Which chunked version keeps every digit in the same order? (a) 726 317 8451 (b) 726 178 451 (c) 723 611 78451 (d) 723 617 8451
- 20.🔢 You want to remember the number 425189172358. Which chunked version keeps every digit in the same order? (a) 4521 8917 2358 (b) 4251 8917 2358 (c) 4255 1891 72358 (d) 4251 8917 238
- 21.🔢 A 20-digit number is split into chunks of 4 digits each. How many chunks is that?
- 22.🔢 Which is a good way to chunk the year 1947? (a) 194 and 7 (b) 19 and 47 (c) 1 and 947 (d) 1 9 4 7
- 23.📅 The digits 25051968 are a date: day, month, year. Which chunking shows the date? (a) 250/519/68 (b) 25/05/1968 (c) 2505/19/68 (d) 25/0519/68
- 24.🔢 A chunk is easiest to keep when it… (a) changes daily (b) has no pattern (c) means something to you (d) is very long
- 25.📅 The digits 20112002 are a date: day, month, year. Which chunking shows the date? (a) 20/1120/02 (b) 2011/20/02 (c) 201/120/02 (d) 20/11/2002
- 26.🔢 You want to remember the number 1834341112. Which chunked version keeps every digit in the same order? (a) 183 443 1112 (b) 183 434 1112 (c) 183 443 41112 (d) 183 431 112
- 27.🔢 Instead of holding 9 separate digits, you hold them as 3 chunks. How many fewer things do you hold in mind?
- 28.📅 The digits 06051990 are a date: day, month, year. Which chunking shows the date? (a) 06/0519/90 (b) 06/05/1990 (c) 060/519/90 (d) 0605/19/90
- 29.🔢 You want to remember the number 5801614661. Which chunked version keeps every digit in the same order? (a) 580 161 4661 (b) 801 614 661 (c) 588 016 14661 (d) 580 116 4661
- 30.🔢 You want to remember the number 4846076143. Which chunked version keeps every digit in the same order? (a) 484 607 613 (b) 484 607 6143 (c) 484 600 76143 (d) 484 670 6143
- 31.🔢 You want to remember the number 7114524320. Which chunked version keeps every digit in the same order? (a) 711 452 4320 (b) 711 454 320 (c) 711 145 24320 (d) 711 542 4320
- 32.📅 The digits 09072019 are a date: day, month, year. Which chunking shows the date? (a) 09/07/2019 (b) 09/0720/19 (c) 090/720/19 (d) 0907/20/19
- 33.🔢 What is chunking? (a) saying it backwards (b) splitting into groups (c) reading very fast (d) writing it twice
- 34.🔢 Instead of holding 10 separate digits, you hold them as 4 chunks. How many fewer things do you hold in mind?
- 35.🔢 A 12-digit number is split into chunks of 3 digits each. How many chunks is that?
- 36.🔢 You want to remember the number 561291802. Which chunked version keeps every digit in the same order? (a) 561 291 820 (b) 561 291 80 (c) 561 291 802 (d) 561 229 1802
- 37.🔢 You want to remember the number 2233518159. Which chunked version keeps every digit in the same order? (a) 223 351 859 (b) 232 351 8159 (c) 223 351 81559 (d) 223 351 8159
- 38.🔢 Instead of holding 12 separate digits, you hold them as 3 chunks. How many fewer things do you hold in mind?
- 39.🔢 You want to remember the number 245736330. Which chunked version keeps every digit in the same order? (a) 245 736 3330 (b) 245 376 330 (c) 457 363 30 (d) 245 736 330
- 40.🔢 You want to remember the number 428979912649. Which chunked version keeps every digit in the same order? (a) 4289 7799 12649 (b) 4287 9991 2649 (c) 4289 7991 649 (d) 4289 7991 2649
Answer key
- 15/06/2000
- 434 697 6138
- 2
- 8483 6613 9574
- 07/11/1954
- 8
- 11/06/1973
- 21/02/1990
- 5
- 7
- 16/06/1999
- 165 666 8230
- 911 413 987
- 03/07/1963
- 27/08/1986
- 13/05/2023
- 2
- 5834 4072 0231
- 723 617 8451
- 4251 8917 2358
- 5
- 19 and 47
- 25/05/1968
- means something to you
- 20/11/2002
- 183 434 1112
- 6
- 06/05/1990
- 580 161 4661
- 484 607 6143
- 711 452 4320
- 09/07/2019
- splitting into groups
- 6
- 4
- 561 291 802
- 223 351 8159
- 9
- 245 736 330
- 4289 7991 2649
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