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 5618562229. Which chunked version keeps every digit in the same order? (a) 561 856 2229 (b) 561 856 62229 (c) 568 562 229 (d) 568 156 2229
- 2.🔢 Why is 987 654 3210 easier to hold than 9876543210? (a) it is printed bigger (b) it is a smaller number (c) it has fewer digits (d) three chunks, not ten
- 3.🔢 You want to remember the number 674905256800. Which chunked version keeps every digit in the same order? (a) 6749 0525 6800 (b) 6749 0525 66800 (c) 6749 0525 680 (d) 7649 0525 6800
- 4.🔢 What is chunking? (a) writing it twice (b) reading very fast (c) splitting into groups (d) saying it backwards
- 5.🔢 You want to remember the number 721982356586. Which chunked version keeps every digit in the same order? (a) 7219 8235 6586 (b) 7218 2356 586 (c) 7221 9823 56586 (d) 7291 8235 6586
- 6.🔢 Instead of holding 9 separate digits, you hold them as 4 chunks. How many fewer things do you hold in mind?
- 7.📅 The digits 25011961 are a date: day, month, year. Which chunking shows the date? (a) 25/01/1961 (b) 250/119/61 (c) 2501/19/61 (d) 25/0119/61
- 8.🔢 A 6-digit number is split into chunks of 3 digits each. How many chunks is that?
- 9.📅 The digits 27031997 are a date: day, month, year. Which chunking shows the date? (a) 270/319/97 (b) 27/03/1997 (c) 2703/19/97 (d) 27/0319/97
- 10.🔢 Instead of holding 8 separate digits, you hold them as 3 chunks. How many fewer things do you hold in mind?
- 11.🔢 You want to remember the number 4074671198. Which chunked version keeps every digit in the same order? (a) 407 467 1198 (b) 407 446 71198 (c) 407 467 1918 (d) 407 467 119
- 12.📅 The digits 01122025 are a date: day, month, year. Which chunking shows the date? (a) 0112/20/25 (b) 01/12/2025 (c) 01/1220/25 (d) 011/220/25
- 13.🔢 Chunking works for… (a) nothing at all (b) only pictures (c) only numbers (d) numbers and letter lists
- 14.📅 The digits 01102003 are a date: day, month, year. Which chunking shows the date? (a) 0110/20/03 (b) 01/1020/03 (c) 01/10/2003 (d) 011/020/03
- 15.🔢 You want to remember the number 5986521206. Which chunked version keeps every digit in the same order? (a) 598 652 120 (b) 598 652 12006 (c) 598 652 1206 (d) 598 652 1260
- 16.📅 The digits 25071975 are a date: day, month, year. Which chunking shows the date? (a) 250/719/75 (b) 2507/19/75 (c) 25/0719/75 (d) 25/07/1975
- 17.🔢 You want to remember the number 789372901. Which chunked version keeps every digit in the same order? (a) 783 729 01 (b) 789 372 9901 (c) 789 372 901 (d) 789 372 091
- 18.🔢 A 9-digit number is split into chunks of 3 digits each. How many chunks is that?
- 19.🔢 You want to remember the number 3711943316. Which chunked version keeps every digit in the same order? (a) 371 943 316 (b) 371 194 3316 (c) 371 193 4316 (d) 371 194 33166
- 20.🔢 A 16-digit number is split into chunks of 4 digits each. How many chunks is that?
- 21.🔢 A 12-digit number is split into chunks of 3 digits each. How many chunks is that?
- 22.🔢 A 10-digit number is split into chunks of 2 digits each. How many chunks is that?
- 23.📅 The digits 01032004 are a date: day, month, year. Which chunking shows the date? (a) 01/0320/04 (b) 010/320/04 (c) 01/03/2004 (d) 0103/20/04
- 24.🔢 You want to remember the number 817909660504. Which chunked version keeps every digit in the same order? (a) 8179 0966 0504 (b) 8190 9660 504 (c) 8170 9966 0504 (d) 8179 0966 60504
- 25.🔢 You want to remember the number 6311412489. Which chunked version keeps every digit in the same order? (a) 631 141 248 (b) 631 141 2489 (c) 631 411 2489 (d) 631 114 12489
- 26.🔢 You want to remember the number 456925012. Which chunked version keeps every digit in the same order? (a) 456 250 12 (b) 456 295 012 (c) 456 925 012 (d) 456 925 5012
- 27.🔢 You want to remember the number 6585091553. Which chunked version keeps every digit in the same order? (a) 658 509 1553 (b) 658 509 11553 (c) 655 809 1553 (d) 658 501 553
- 28.🔢 A 4-digit number is split into chunks of 2 digits each. How many chunks is that?
- 29.🔢 You want to remember the number 844260490. Which chunked version keeps every digit in the same order? (a) 844 260 490 (b) 844 260 40 (c) 884 426 0490 (d) 484 260 490
- 30.🔢 You want to remember the number 5076634619. Which chunked version keeps every digit in the same order? (a) 507 663 4619 (b) 507 663 4691 (c) 507 663 34619 (d) 507 634 619
- 31.📅 The digits 18031955 are a date: day, month, year. Which chunking shows the date? (a) 180/319/55 (b) 18/03/1955 (c) 1803/19/55 (d) 18/0319/55
- 32.🔢 You want to remember the number 217040024791. Which chunked version keeps every digit in the same order? (a) 2170 4002 4791 (b) 2174 0002 4791 (c) 2104 0024 791 (d) 2117 0400 24791
- 33.🔢 You want to remember the number 764224075. Which chunked version keeps every digit in the same order? (a) 764 224 705 (b) 764 224 075 (c) 776 422 4075 (d) 764 224 75
- 34.🔢 You want to remember the number 881245662226. Which chunked version keeps every digit in the same order? (a) 8812 4566 222 (b) 8812 4566 2262 (c) 8812 4566 2226 (d) 8812 4566 22226
- 35.🔢 You want to remember the number 5189168640. Which chunked version keeps every digit in the same order? (a) 551 891 68640 (b) 518 916 8640 (c) 581 916 8640 (d) 518 916 840
- 36.🔢 You want to remember the number 9081681074. Which chunked version keeps every digit in the same order? (a) 098 168 1074 (b) 908 168 10744 (c) 908 681 074 (d) 908 168 1074
- 37.🔢 You want to remember the number 658939724. Which chunked version keeps every digit in the same order? (a) 658 939 724 (b) 658 397 24 (c) 658 939 274 (d) 658 893 9724
- 38.🔢 A 8-digit number is split into chunks of 4 digits each. How many chunks is that?
- 39.🔢 You want to remember the number 656216627868. Which chunked version keeps every digit in the same order? (a) 6562 1662 7868 (b) 6562 1666 27868 (c) 6562 1626 7868 (d) 6562 1662 768
- 40.📅 The digits 04101989 are a date: day, month, year. Which chunking shows the date? (a) 041/019/89 (b) 04/10/1989 (c) 04/1019/89 (d) 0410/19/89
Answer key
- 561 856 2229
- three chunks, not ten
- 6749 0525 6800
- splitting into groups
- 7219 8235 6586
- 5
- 25/01/1961
- 2
- 27/03/1997
- 5
- 407 467 1198
- 01/12/2025
- numbers and letter lists
- 01/10/2003
- 598 652 1206
- 25/07/1975
- 789 372 901
- 3
- 371 194 3316
- 4
- 4
- 5
- 01/03/2004
- 8179 0966 0504
- 631 141 2489
- 456 925 012
- 658 509 1553
- 2
- 844 260 490
- 507 663 4619
- 18/03/1955
- 2170 4002 4791
- 764 224 075
- 8812 4566 2226
- 518 916 8640
- 908 168 1074
- 658 939 724
- 2
- 6562 1662 7868
- 04/10/1989
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