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 450871136231. Which chunked version keeps every digit in the same order? (a) 4508 7113 2631 (b) 4508 1136 231 (c) 4500 8711 36231 (d) 4508 7113 6231
- 2.🔢 Which is a good way to chunk the year 1947? (a) 1 and 947 (b) 19 and 47 (c) 1 9 4 7 (d) 194 and 7
- 3.📅 The digits 10122019 are a date: day, month, year. Which chunking shows the date? (a) 10/12/2019 (b) 1012/20/19 (c) 101/220/19 (d) 10/1220/19
- 4.🔢 A chunk is easiest to keep when it… (a) has no pattern (b) means something to you (c) is very long (d) changes daily
- 5.🔢 A 20-digit number is split into chunks of 4 digits each. How many chunks is that?
- 6.📅 The digits 09101974 are a date: day, month, year. Which chunking shows the date? (a) 0910/19/74 (b) 091/019/74 (c) 09/1019/74 (d) 09/10/1974
- 7.🔢 You want to remember the number 6285900400. Which chunked version keeps every digit in the same order? (a) 662 859 00400 (b) 628 900 400 (c) 628 590 0400 (d) 268 590 0400
- 8.🔢 You want to remember the number 323426647601. Which chunked version keeps every digit in the same order? (a) 3242 6647 601 (b) 3233 4266 47601 (c) 3324 2664 7601 (d) 3234 2664 7601
- 9.🔢 A 6-digit number is split into chunks of 2 digits each. How many chunks is that?
- 10.🔢 You want to remember the number 5364235101. Which chunked version keeps every digit in the same order? (a) 536 423 101 (b) 536 423 5101 (c) 536 432 5101 (d) 536 423 51011
- 11.🔢 What is chunking? (a) reading very fast (b) writing it twice (c) splitting into groups (d) saying it backwards
- 12.🔢 Instead of holding 9 separate digits, you hold them as 4 chunks. How many fewer things do you hold in mind?
- 13.🔢 A 9-digit number is split into chunks of 3 digits each. How many chunks is that?
- 14.🔢 A 12-digit number is split into chunks of 4 digits each. How many chunks is that?
- 15.📅 The digits 12062005 are a date: day, month, year. Which chunking shows the date? (a) 120/620/05 (b) 1206/20/05 (c) 12/0620/05 (d) 12/06/2005
- 16.🔢 You want to remember the number 408942710630. Which chunked version keeps every digit in the same order? (a) 4809 4271 0630 (b) 4089 9427 10630 (c) 4089 4210 630 (d) 4089 4271 0630
- 17.🔢 You want to remember the number 4725004624. Which chunked version keeps every digit in the same order? (a) 472 500 46244 (b) 472 500 464 (c) 472 504 0624 (d) 472 500 4624
- 18.🔢 Chunking works for… (a) only pictures (b) numbers and letter lists (c) only numbers (d) nothing at all
- 19.🔢 A 10-digit number is split into chunks of 2 digits each. How many chunks is that?
- 20.🔢 You want to remember the number 969475374. Which chunked version keeps every digit in the same order? (a) 969 475 347 (b) 969 475 3774 (c) 969 475 37 (d) 969 475 374
- 21.🔢 You want to remember the number 1346200414. Which chunked version keeps every digit in the same order? (a) 136 200 414 (b) 134 620 00414 (c) 134 620 0144 (d) 134 620 0414
- 22.📅 The digits 10111988 are a date: day, month, year. Which chunking shows the date? (a) 101/119/88 (b) 10/11/1988 (c) 10/1119/88 (d) 1011/19/88
- 23.📅 The digits 03072007 are a date: day, month, year. Which chunking shows the date? (a) 03/0720/07 (b) 0307/20/07 (c) 03/07/2007 (d) 030/720/07
- 24.🔢 A 8-digit number is split into chunks of 2 digits each. How many chunks is that?
- 25.🔢 You want to remember the number 8800336172. Which chunked version keeps every digit in the same order? (a) 880 033 6172 (b) 880 033 61722 (c) 808 033 6172 (d) 800 336 172
- 26.🔢 A 15-digit number is split into chunks of 3 digits each. How many chunks is that?
- 27.🔢 Instead of holding 11 separate digits, you hold them as 3 chunks. How many fewer things do you hold in mind?
- 28.🔢 You want to remember the number 559155910. Which chunked version keeps every digit in the same order? (a) 559 155 5910 (b) 559 155 901 (c) 559 155 90 (d) 559 155 910
- 29.🔢 Instead of holding 8 separate digits, you hold them as 3 chunks. How many fewer things do you hold in mind?
- 30.📅 The digits 20122025 are a date: day, month, year. Which chunking shows the date? (a) 2012/20/25 (b) 20/1220/25 (c) 201/220/25 (d) 20/12/2025
- 31.🔢 You want to remember the number 480056410957. Which chunked version keeps every digit in the same order? (a) 4800 5610 957 (b) 4800 5641 0957 (c) 4800 5564 10957 (d) 4080 5641 0957
- 32.🔢 You want to remember the number 215564253008. Which chunked version keeps every digit in the same order? (a) 2155 6425 3008 (b) 2155 6425 300 (c) 2515 6425 3008 (d) 2115 5642 53008
- 33.📅 The digits 14092019 are a date: day, month, year. Which chunking shows the date? (a) 140/920/19 (b) 14/0920/19 (c) 1409/20/19 (d) 14/09/2019
- 34.🔢 You want to remember the number 400633039401. Which chunked version keeps every digit in the same order? (a) 0406 3303 9401 (b) 4006 3039 401 (c) 4006 3330 39401 (d) 4006 3303 9401
- 35.📅 The digits 20022006 are a date: day, month, year. Which chunking shows the date? (a) 20/02/2006 (b) 2002/20/06 (c) 20/0220/06 (d) 200/220/06
- 36.📅 The digits 16032017 are a date: day, month, year. Which chunking shows the date? (a) 16/03/2017 (b) 1603/20/17 (c) 16/0320/17 (d) 160/320/17
- 37.🔢 You want to remember the number 505413362. Which chunked version keeps every digit in the same order? (a) 505 413 326 (b) 505 433 62 (c) 505 413 362 (d) 505 413 3622
- 38.🔢 Why is 987 654 3210 easier to hold than 9876543210? (a) it has fewer digits (b) it is printed bigger (c) it is a smaller number (d) three chunks, not ten
- 39.🔢 You want to remember the number 119879527. Which chunked version keeps every digit in the same order? (a) 111 987 9527 (b) 119 875 927 (c) 198 795 27 (d) 119 879 527
- 40.📅 The digits 08021967 are a date: day, month, year. Which chunking shows the date? (a) 08/02/1967 (b) 08/0219/67 (c) 0802/19/67 (d) 080/219/67
Answer key
- 4508 7113 6231
- 19 and 47
- 10/12/2019
- means something to you
- 5
- 09/10/1974
- 628 590 0400
- 3234 2664 7601
- 3
- 536 423 5101
- splitting into groups
- 5
- 3
- 3
- 12/06/2005
- 4089 4271 0630
- 472 500 4624
- numbers and letter lists
- 5
- 969 475 374
- 134 620 0414
- 10/11/1988
- 03/07/2007
- 4
- 880 033 6172
- 5
- 8
- 559 155 910
- 5
- 20/12/2025
- 4800 5641 0957
- 2155 6425 3008
- 14/09/2019
- 4006 3303 9401
- 20/02/2006
- 16/03/2017
- 505 413 362
- three chunks, not ten
- 119 879 527
- 08/02/1967
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