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.🔢 Instead of holding 9 separate digits, you hold them as 3 chunks. How many fewer things do you hold in mind?
- 2.🔢 A 6-digit number is split into chunks of 2 digits each. How many chunks is that?
- 3.🔢 You want to remember the number 7798742216. Which chunked version keeps every digit in the same order? (a) 779 872 4216 (b) 778 742 216 (c) 779 874 2216 (d) 779 874 22116
- 4.🔢 You want to remember the number 394716462. Which chunked version keeps every digit in the same order? (a) 394 761 462 (b) 339 471 6462 (c) 394 716 462 (d) 397 164 62
- 5.🔢 Why is 987 654 3210 easier to hold than 9876543210? (a) three chunks, not ten (b) it is printed bigger (c) it has fewer digits (d) it is a smaller number
- 6.🔢 Instead of holding 11 separate digits, you hold them as 4 chunks. How many fewer things do you hold in mind?
- 7.🔢 Instead of holding 12 separate digits, you hold them as 4 chunks. How many fewer things do you hold in mind?
- 8.📅 The digits 16112014 are a date: day, month, year. Which chunking shows the date? (a) 1611/20/14 (b) 161/120/14 (c) 16/11/2014 (d) 16/1120/14
- 9.🔢 You want to remember the number 5187100935. Which chunked version keeps every digit in the same order? (a) 517 810 0935 (b) 518 711 00935 (c) 518 710 0935 (d) 518 100 935
- 10.🔢 You want to remember the number 760054826683. Which chunked version keeps every digit in the same order? (a) 7600 5486 683 (b) 7600 5486 2683 (c) 7600 5482 6683 (d) 7600 5482 66683
- 11.🔢 What is chunking? (a) splitting into groups (b) saying it backwards (c) reading very fast (d) writing it twice
- 12.🔢 A 10-digit number is split into chunks of 2 digits each. How many chunks is that?
- 13.🔢 You want to remember the number 2202272845. Which chunked version keeps every digit in the same order? (a) 220 227 2845 (b) 220 227 285 (c) 202 227 2845 (d) 222 022 72845
- 14.🔢 You want to remember the number 5079110910. Which chunked version keeps every digit in the same order? (a) 507 911 09910 (b) 507 910 1910 (c) 507 911 0910 (d) 507 910 910
- 15.📅 The digits 12071998 are a date: day, month, year. Which chunking shows the date? (a) 120/719/98 (b) 1207/19/98 (c) 12/07/1998 (d) 12/0719/98
- 16.🔢 You want to remember the number 692305801. Which chunked version keeps every digit in the same order? (a) 692 305 01 (b) 692 305 8801 (c) 692 035 801 (d) 692 305 801
- 17.🔢 You want to remember the number 339602285. Which chunked version keeps every digit in the same order? (a) 339 602 25 (b) 339 602 2285 (c) 339 062 285 (d) 339 602 285
- 18.🔢 You want to remember the number 6299038387. Which chunked version keeps every digit in the same order? (a) 629 903 8387 (b) 299 038 387 (c) 692 903 8387 (d) 629 903 83387
- 19.🔢 You want to remember the number 541372271. Which chunked version keeps every digit in the same order? (a) 543 722 71 (b) 514 372 271 (c) 541 137 2271 (d) 541 372 271
- 20.🔢 You want to remember the number 361164753. Which chunked version keeps every digit in the same order? (a) 631 164 753 (b) 361 167 53 (c) 361 166 4753 (d) 361 164 753
- 21.🔢 A chunk is easiest to keep when it… (a) has no pattern (b) means something to you (c) is very long (d) changes daily
- 22.🔢 You want to remember the number 606200109. Which chunked version keeps every digit in the same order? (a) 606 200 109 (b) 066 200 109 (c) 606 200 09 (d) 606 200 0109
- 23.🔢 You want to remember the number 691730495. Which chunked version keeps every digit in the same order? (a) 691 730 495 (b) 669 173 0495 (c) 691 704 95 (d) 691 734 095
- 24.🔢 Instead of holding 10 separate digits, you hold them as 3 chunks. How many fewer things do you hold in mind?
- 25.🔢 You want to remember the number 6497810564. Which chunked version keeps every digit in the same order? (a) 649 781 05564 (b) 649 810 564 (c) 649 781 0564 (d) 649 718 0564
- 26.🔢 You want to remember the number 512892805. Which chunked version keeps every digit in the same order? (a) 512 892 85 (b) 512 892 2805 (c) 512 892 085 (d) 512 892 805
- 27.🔢 A 6-digit number is split into chunks of 3 digits each. How many chunks is that?
- 28.🔢 You want to remember the number 217113609871. Which chunked version keeps every digit in the same order? (a) 2171 1360 971 (b) 2171 1306 9871 (c) 2117 1136 09871 (d) 2171 1360 9871
- 29.📅 The digits 04052005 are a date: day, month, year. Which chunking shows the date? (a) 0405/20/05 (b) 040/520/05 (c) 04/05/2005 (d) 04/0520/05
- 30.🔢 Instead of holding 9 separate digits, you hold them as 4 chunks. How many fewer things do you hold in mind?
- 31.📅 The digits 09031983 are a date: day, month, year. Which chunking shows the date? (a) 09/0319/83 (b) 09/03/1983 (c) 090/319/83 (d) 0903/19/83
- 32.🔢 You want to remember the number 3664527497. Which chunked version keeps every digit in the same order? (a) 366 452 7479 (b) 366 452 497 (c) 366 452 7497 (d) 366 452 27497
- 33.📅 The digits 04061975 are a date: day, month, year. Which chunking shows the date? (a) 04/06/1975 (b) 040/619/75 (c) 04/0619/75 (d) 0406/19/75
- 34.🔢 Which is a good way to chunk the year 1947? (a) 1 9 4 7 (b) 19 and 47 (c) 1 and 947 (d) 194 and 7
- 35.🔢 You want to remember the number 105230222888. Which chunked version keeps every digit in the same order? (a) 1025 3022 2888 (b) 1052 3022 888 (c) 1052 3022 2888 (d) 1052 3022 28888
- 36.📅 The digits 18021953 are a date: day, month, year. Which chunking shows the date? (a) 1802/19/53 (b) 180/219/53 (c) 18/0219/53 (d) 18/02/1953
- 37.🔢 You want to remember the number 586582441642. Which chunked version keeps every digit in the same order? (a) 5856 8244 1642 (b) 5865 8244 1642 (c) 5866 5824 41642 (d) 5865 8241 642
- 38.📅 The digits 19091984 are a date: day, month, year. Which chunking shows the date? (a) 19/09/1984 (b) 1909/19/84 (c) 19/0919/84 (d) 190/919/84
- 39.🔢 You want to remember the number 9909974108. Which chunked version keeps every digit in the same order? (a) 990 997 4108 (b) 990 997 4018 (c) 990 997 108 (d) 990 997 41008
- 40.📅 The digits 13081985 are a date: day, month, year. Which chunking shows the date? (a) 130/819/85 (b) 13/0819/85 (c) 13/08/1985 (d) 1308/19/85
Answer key
- 6
- 3
- 779 874 2216
- 394 716 462
- three chunks, not ten
- 7
- 8
- 16/11/2014
- 518 710 0935
- 7600 5482 6683
- splitting into groups
- 5
- 220 227 2845
- 507 911 0910
- 12/07/1998
- 692 305 801
- 339 602 285
- 629 903 8387
- 541 372 271
- 361 164 753
- means something to you
- 606 200 109
- 691 730 495
- 7
- 649 781 0564
- 512 892 805
- 2
- 2171 1360 9871
- 04/05/2005
- 5
- 09/03/1983
- 366 452 7497
- 04/06/1975
- 19 and 47
- 1052 3022 2888
- 18/02/1953
- 5865 8244 1642
- 19/09/1984
- 990 997 4108
- 13/08/1985
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