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 466893297902. Which chunked version keeps every digit in the same order? (a) 4668 9932 97902 (b) 6468 9329 7902 (c) 4668 9329 7902 (d) 4668 9329 902
- 2.🔢 You want to remember the number 4700113803. Which chunked version keeps every digit in the same order? (a) 470 011 383 (b) 470 001 13803 (c) 470 011 3803 (d) 470 011 3830
- 3.🔢 Instead of holding 11 separate digits, you hold them as 3 chunks. How many fewer things do you hold in mind?
- 4.🔢 Instead of holding 8 separate digits, you hold them as 4 chunks. How many fewer things do you hold in mind?
- 5.🔢 A 10-digit number is split into chunks of 2 digits each. How many chunks is that?
- 6.🔢 A chunk is easiest to keep when it… (a) changes daily (b) has no pattern (c) is very long (d) means something to you
- 7.📅 The digits 28091971 are a date: day, month, year. Which chunking shows the date? (a) 2809/19/71 (b) 28/09/1971 (c) 28/0919/71 (d) 280/919/71
- 8.🔢 What is chunking? (a) writing it twice (b) splitting into groups (c) reading very fast (d) saying it backwards
- 9.📅 The digits 15101970 are a date: day, month, year. Which chunking shows the date? (a) 15/10/1970 (b) 15/1019/70 (c) 1510/19/70 (d) 151/019/70
- 10.🔢 You want to remember the number 829402551. Which chunked version keeps every digit in the same order? (a) 294 025 51 (b) 829 400 2551 (c) 829 402 551 (d) 829 420 551
- 11.📅 The digits 02032024 are a date: day, month, year. Which chunking shows the date? (a) 020/320/24 (b) 02/03/2024 (c) 0203/20/24 (d) 02/0320/24
- 12.🔢 You want to remember the number 670815910877. Which chunked version keeps every digit in the same order? (a) 6708 1591 0877 (b) 6708 1591 877 (c) 6708 1590 1877 (d) 6700 8159 10877
- 13.🔢 You want to remember the number 9046354414. Which chunked version keeps every digit in the same order? (a) 904 635 4414 (b) 904 365 4414 (c) 946 354 414 (d) 904 633 54414
- 14.📅 The digits 13111988 are a date: day, month, year. Which chunking shows the date? (a) 13/1119/88 (b) 1311/19/88 (c) 131/119/88 (d) 13/11/1988
- 15.🔢 Why is 987 654 3210 easier to hold than 9876543210? (a) it is printed bigger (b) three chunks, not ten (c) it is a smaller number (d) it has fewer digits
- 16.📅 The digits 21112008 are a date: day, month, year. Which chunking shows the date? (a) 21/11/2008 (b) 21/1120/08 (c) 211/120/08 (d) 2111/20/08
- 17.🔢 You want to remember the number 610147749. Which chunked version keeps every digit in the same order? (a) 610 147 479 (b) 610 147 7749 (c) 610 147 749 (d) 610 147 49
- 18.🔢 Instead of holding 9 separate digits, you hold them as 3 chunks. How many fewer things do you hold in mind?
- 19.🔢 Which is a good way to chunk the year 1947? (a) 1 9 4 7 (b) 19 and 47 (c) 194 and 7 (d) 1 and 947
- 20.🔢 Chunking works for… (a) only numbers (b) numbers and letter lists (c) nothing at all (d) only pictures
- 21.🔢 You want to remember the number 818321189288. Which chunked version keeps every digit in the same order? (a) 8183 2118 2988 (b) 8183 2211 89288 (c) 1832 1189 288 (d) 8183 2118 9288
- 22.🔢 You want to remember the number 190273861. Which chunked version keeps every digit in the same order? (a) 190 273 8661 (b) 190 273 861 (c) 190 738 61 (d) 910 273 861
- 23.🔢 You want to remember the number 865565410. Which chunked version keeps every digit in the same order? (a) 865 654 10 (b) 865 564 510 (c) 865 565 410 (d) 865 565 4100
- 24.📅 The digits 20071956 are a date: day, month, year. Which chunking shows the date? (a) 20/0719/56 (b) 2007/19/56 (c) 20/07/1956 (d) 200/719/56
- 25.📅 The digits 16102005 are a date: day, month, year. Which chunking shows the date? (a) 161/020/05 (b) 1610/20/05 (c) 16/1020/05 (d) 16/10/2005
- 26.🔢 You want to remember the number 807688949262. Which chunked version keeps every digit in the same order? (a) 8076 8894 9262 (b) 8007 6889 49262 (c) 8076 8894 9622 (d) 8076 8899 262
- 27.🔢 You want to remember the number 2934045308. Which chunked version keeps every digit in the same order? (a) 293 404 5308 (b) 293 045 308 (c) 293 404 53088 (d) 293 404 5380
- 28.📅 The digits 15112017 are a date: day, month, year. Which chunking shows the date? (a) 1511/20/17 (b) 151/120/17 (c) 15/11/2017 (d) 15/1120/17
- 29.📅 The digits 10022008 are a date: day, month, year. Which chunking shows the date? (a) 1002/20/08 (b) 10/02/2008 (c) 100/220/08 (d) 10/0220/08
- 30.🔢 You want to remember the number 5381732781. Which chunked version keeps every digit in the same order? (a) 538 177 32781 (b) 583 173 2781 (c) 538 732 781 (d) 538 173 2781
- 31.📅 The digits 09032024 are a date: day, month, year. Which chunking shows the date? (a) 090/320/24 (b) 0903/20/24 (c) 09/0320/24 (d) 09/03/2024
- 32.🔢 You want to remember the number 605301471915. Which chunked version keeps every digit in the same order? (a) 6053 0147 19115 (b) 0653 0147 1915 (c) 6053 0147 1915 (d) 6053 0147 915
- 33.🔢 You want to remember the number 312099162. Which chunked version keeps every digit in the same order? (a) 132 099 162 (b) 312 099 162 (c) 331 209 9162 (d) 320 991 62
- 34.🔢 A 20-digit number is split into chunks of 4 digits each. How many chunks is that?
- 35.🔢 Instead of holding 12 separate digits, you hold them as 3 chunks. How many fewer things do you hold in mind?
- 36.🔢 You want to remember the number 5982051784. Which chunked version keeps every digit in the same order? (a) 598 205 17844 (b) 598 025 1784 (c) 598 205 1784 (d) 598 205 174
- 37.🔢 You want to remember the number 986240130. Which chunked version keeps every digit in the same order? (a) 986 240 13 (b) 988 624 0130 (c) 986 240 130 (d) 986 240 310
- 38.📅 The digits 11011970 are a date: day, month, year. Which chunking shows the date? (a) 110/119/70 (b) 11/0119/70 (c) 11/01/1970 (d) 1101/19/70
- 39.🔢 A 4-digit number is split into chunks of 2 digits each. How many chunks is that?
- 40.📅 The digits 05121976 are a date: day, month, year. Which chunking shows the date? (a) 05/12/1976 (b) 05/1219/76 (c) 0512/19/76 (d) 051/219/76
Answer key
- 4668 9329 7902
- 470 011 3803
- 8
- 4
- 5
- means something to you
- 28/09/1971
- splitting into groups
- 15/10/1970
- 829 402 551
- 02/03/2024
- 6708 1591 0877
- 904 635 4414
- 13/11/1988
- three chunks, not ten
- 21/11/2008
- 610 147 749
- 6
- 19 and 47
- numbers and letter lists
- 8183 2118 9288
- 190 273 861
- 865 565 410
- 20/07/1956
- 16/10/2005
- 8076 8894 9262
- 293 404 5308
- 15/11/2017
- 10/02/2008
- 538 173 2781
- 09/03/2024
- 6053 0147 1915
- 312 099 162
- 5
- 9
- 598 205 1784
- 986 240 130
- 11/01/1970
- 2
- 05/12/1976
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