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.🔢 Which is a good way to chunk the year 1947? (a) 194 and 7 (b) 1 and 947 (c) 19 and 47 (d) 1 9 4 7
- 2.🔢 You want to remember the number 218577525. Which chunked version keeps every digit in the same order? (a) 218 575 25 (b) 218 757 525 (c) 218 577 525 (d) 218 557 7525
- 3.🔢 A 20-digit number is split into chunks of 4 digits each. How many chunks is that?
- 4.📅 The digits 06091953 are a date: day, month, year. Which chunking shows the date? (a) 06/0919/53 (b) 0609/19/53 (c) 06/09/1953 (d) 060/919/53
- 5.📅 The digits 02021953 are a date: day, month, year. Which chunking shows the date? (a) 02/0219/53 (b) 0202/19/53 (c) 020/219/53 (d) 02/02/1953
- 6.📅 The digits 03021989 are a date: day, month, year. Which chunking shows the date? (a) 03/0219/89 (b) 030/219/89 (c) 0302/19/89 (d) 03/02/1989
- 7.📅 The digits 15091969 are a date: day, month, year. Which chunking shows the date? (a) 15/09/1969 (b) 15/0919/69 (c) 1509/19/69 (d) 150/919/69
- 8.🔢 You want to remember the number 807928334795. Which chunked version keeps every digit in the same order? (a) 8807 9283 34795 (b) 8079 2833 4795 (c) 8097 2833 4795 (d) 8079 2834 795
- 9.🔢 Instead of holding 10 separate digits, you hold them as 4 chunks. How many fewer things do you hold in mind?
- 10.🔢 Instead of holding 9 separate digits, you hold them as 4 chunks. How many fewer things do you hold in mind?
- 11.🔢 Chunking works for… (a) nothing at all (b) only pictures (c) numbers and letter lists (d) only numbers
- 12.🔢 You want to remember the number 548741533. Which chunked version keeps every digit in the same order? (a) 548 741 353 (b) 548 874 1533 (c) 587 415 33 (d) 548 741 533
- 13.🔢 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
- 14.🔢 A 9-digit number is split into chunks of 3 digits each. How many chunks is that?
- 15.📅 The digits 15081982 are a date: day, month, year. Which chunking shows the date? (a) 150/819/82 (b) 1508/19/82 (c) 15/08/1982 (d) 15/0819/82
- 16.🔢 You want to remember the number 937235599874. Which chunked version keeps every digit in the same order? (a) 9373 5599 874 (b) 9372 3559 98874 (c) 9373 2559 9874 (d) 9372 3559 9874
- 17.🔢 You want to remember the number 8007510071. Which chunked version keeps every digit in the same order? (a) 800 751 0017 (b) 800 510 071 (c) 800 751 0071 (d) 800 075 10071
- 18.🔢 You want to remember the number 600763791. Which chunked version keeps every digit in the same order? (a) 607 063 791 (b) 600 763 7791 (c) 600 763 791 (d) 607 637 91
- 19.🔢 You want to remember the number 597750191477. Which chunked version keeps every digit in the same order? (a) 9577 5019 1477 (b) 5597 7501 91477 (c) 5977 5019 1477 (d) 5977 5019 147
- 20.📅 The digits 07032007 are a date: day, month, year. Which chunking shows the date? (a) 0703/20/07 (b) 07/0320/07 (c) 070/320/07 (d) 07/03/2007
- 21.📅 The digits 03091976 are a date: day, month, year. Which chunking shows the date? (a) 0309/19/76 (b) 030/919/76 (c) 03/09/1976 (d) 03/0919/76
- 22.📅 The digits 06121977 are a date: day, month, year. Which chunking shows the date? (a) 0612/19/77 (b) 06/1219/77 (c) 061/219/77 (d) 06/12/1977
- 23.🔢 You want to remember the number 1807549507. Which chunked version keeps every digit in the same order? (a) 180 549 507 (b) 180 745 9507 (c) 180 754 9507 (d) 180 754 49507
- 24.🔢 A 6-digit number is split into chunks of 3 digits each. How many chunks is that?
- 25.🔢 You want to remember the number 775458934535. Which chunked version keeps every digit in the same order? (a) 7745 5893 4535 (b) 7754 5893 535 (c) 7754 5893 45335 (d) 7754 5893 4535
- 26.📅 The digits 13082018 are a date: day, month, year. Which chunking shows the date? (a) 1308/20/18 (b) 13/0820/18 (c) 13/08/2018 (d) 130/820/18
- 27.🔢 You want to remember the number 200015102. Which chunked version keeps every digit in the same order? (a) 200 151 02 (b) 200 011 502 (c) 200 015 102 (d) 200 001 5102
- 28.🔢 Instead of holding 12 separate digits, you hold them as 4 chunks. How many fewer things do you hold in mind?
- 29.🔢 A 8-digit number is split into chunks of 4 digits each. How many chunks is that?
- 30.🔢 What is chunking? (a) saying it backwards (b) writing it twice (c) reading very fast (d) splitting into groups
- 31.🔢 You want to remember the number 486002133. Which chunked version keeps every digit in the same order? (a) 460 021 33 (b) 486 002 133 (c) 486 600 2133 (d) 486 020 133
- 32.🔢 You want to remember the number 462774169594. Which chunked version keeps every digit in the same order? (a) 4627 7146 9594 (b) 4627 7741 69594 (c) 4627 7416 994 (d) 4627 7416 9594
- 33.🔢 You want to remember the number 642202961126. Which chunked version keeps every digit in the same order? (a) 6422 0296 1126 (b) 6422 0296 11266 (c) 6422 0296 1216 (d) 4220 2961 126
- 34.🔢 You want to remember the number 7797161242. Which chunked version keeps every digit in the same order? (a) 777 916 1242 (b) 797 161 242 (c) 779 716 12442 (d) 779 716 1242
- 35.🔢 Instead of holding 11 separate digits, you hold them as 4 chunks. How many fewer things do you hold in mind?
- 36.📅 The digits 19122009 are a date: day, month, year. Which chunking shows the date? (a) 1912/20/09 (b) 19/1220/09 (c) 191/220/09 (d) 19/12/2009
- 37.🔢 You want to remember the number 2745812326. Which chunked version keeps every digit in the same order? (a) 277 458 12326 (b) 274 581 2326 (c) 274 512 326 (d) 274 582 1326
- 38.🔢 You want to remember the number 2616997196. Which chunked version keeps every digit in the same order? (a) 226 169 97196 (b) 261 699 196 (c) 261 699 7196 (d) 216 699 7196
- 39.📅 The digits 16031967 are a date: day, month, year. Which chunking shows the date? (a) 16/0319/67 (b) 1603/19/67 (c) 160/319/67 (d) 16/03/1967
- 40.🔢 Instead of holding 11 separate digits, you hold them as 3 chunks. How many fewer things do you hold in mind?
Answer key
- 19 and 47
- 218 577 525
- 5
- 06/09/1953
- 02/02/1953
- 03/02/1989
- 15/09/1969
- 8079 2833 4795
- 6
- 5
- numbers and letter lists
- 548 741 533
- three chunks, not ten
- 3
- 15/08/1982
- 9372 3559 9874
- 800 751 0071
- 600 763 791
- 5977 5019 1477
- 07/03/2007
- 03/09/1976
- 06/12/1977
- 180 754 9507
- 2
- 7754 5893 4535
- 13/08/2018
- 200 015 102
- 8
- 2
- splitting into groups
- 486 002 133
- 4627 7416 9594
- 6422 0296 1126
- 779 716 1242
- 7
- 19/12/2009
- 274 581 2326
- 261 699 7196
- 16/03/1967
- 8
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