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.🔢 What is chunking? (a) reading very fast (b) saying it backwards (c) splitting into groups (d) writing it twice
- 2.🔢 You want to remember the number 1770136075. Which chunked version keeps every digit in the same order? (a) 177 013 66075 (b) 170 136 075 (c) 177 013 6075 (d) 717 013 6075
- 3.🔢 Instead of holding 12 separate digits, you hold them as 4 chunks. How many fewer things do you hold in mind?
- 4.🔢 You want to remember the number 595002010088. Which chunked version keeps every digit in the same order? (a) 5905 0201 0088 (b) 9500 2010 088 (c) 5950 0201 0088 (d) 5955 0020 10088
- 5.🔢 Instead of holding 8 separate digits, you hold them as 3 chunks. How many fewer things do you hold in mind?
- 6.📅 The digits 19042005 are a date: day, month, year. Which chunking shows the date? (a) 19/0420/05 (b) 19/04/2005 (c) 190/420/05 (d) 1904/20/05
- 7.📅 The digits 09061998 are a date: day, month, year. Which chunking shows the date? (a) 09/0619/98 (b) 090/619/98 (c) 09/06/1998 (d) 0906/19/98
- 8.🔢 A chunk is easiest to keep when it… (a) has no pattern (b) means something to you (c) is very long (d) changes daily
- 9.📅 The digits 28082018 are a date: day, month, year. Which chunking shows the date? (a) 2808/20/18 (b) 28/08/2018 (c) 280/820/18 (d) 28/0820/18
- 10.🔢 Instead of holding 8 separate digits, you hold them as 4 chunks. How many fewer things do you hold in mind?
- 11.🔢 You want to remember the number 292246410. Which chunked version keeps every digit in the same order? (a) 292 244 10 (b) 292 246 410 (c) 292 224 6410 (d) 922 246 410
- 12.📅 The digits 04102016 are a date: day, month, year. Which chunking shows the date? (a) 04/1020/16 (b) 04/10/2016 (c) 0410/20/16 (d) 041/020/16
- 13.🔢 You want to remember the number 781730390. Which chunked version keeps every digit in the same order? (a) 781 733 090 (b) 781 730 390 (c) 781 730 0390 (d) 781 733 90
- 14.🔢 You want to remember the number 721327310. Which chunked version keeps every digit in the same order? (a) 721 327 310 (b) 721 327 130 (c) 721 327 7310 (d) 213 273 10
- 15.🔢 A 15-digit number is split into chunks of 3 digits each. How many chunks is that?
- 16.🔢 Instead of holding 9 separate digits, you hold them as 3 chunks. How many fewer things do you hold in mind?
- 17.🔢 You want to remember the number 192609640. Which chunked version keeps every digit in the same order? (a) 196 209 640 (b) 192 609 6640 (c) 192 096 40 (d) 192 609 640
- 18.🔢 Instead of holding 11 separate digits, you hold them as 4 chunks. How many fewer things do you hold in mind?
- 19.🔢 You want to remember the number 6740862050. Which chunked version keeps every digit in the same order? (a) 674 086 250 (b) 674 086 2050 (c) 674 086 20050 (d) 674 806 2050
- 20.🔢 You want to remember the number 224533322. Which chunked version keeps every digit in the same order? (a) 224 533 3222 (b) 224 333 22 (c) 224 353 322 (d) 224 533 322
- 21.🔢 A 8-digit number is split into chunks of 4 digits each. How many chunks is that?
- 22.🔢 You want to remember the number 381894137021. Which chunked version keeps every digit in the same order? (a) 3818 9437 021 (b) 3818 8941 37021 (c) 3818 9413 7021 (d) 8318 9413 7021
- 23.📅 The digits 02061996 are a date: day, month, year. Which chunking shows the date? (a) 0206/19/96 (b) 020/619/96 (c) 02/0619/96 (d) 02/06/1996
- 24.🔢 A 4-digit number is split into chunks of 2 digits each. How many chunks is that?
- 25.📅 The digits 22091963 are a date: day, month, year. Which chunking shows the date? (a) 2209/19/63 (b) 220/919/63 (c) 22/0919/63 (d) 22/09/1963
- 26.🔢 Instead of holding 10 separate digits, you hold them as 4 chunks. How many fewer things do you hold in mind?
- 27.🔢 You want to remember the number 5521165303. Which chunked version keeps every digit in the same order? (a) 552 116 53303 (b) 552 165 303 (c) 552 161 5303 (d) 552 116 5303
- 28.🔢 You want to remember the number 841244755. Which chunked version keeps every digit in the same order? (a) 841 244 755 (b) 841 244 7555 (c) 412 447 55 (d) 481 244 755
- 29.📅 The digits 07021969 are a date: day, month, year. Which chunking shows the date? (a) 0702/19/69 (b) 07/02/1969 (c) 070/219/69 (d) 07/0219/69
- 30.🔢 You want to remember the number 163074253378. Which chunked version keeps every digit in the same order? (a) 1603 7425 3378 (b) 1630 7425 53378 (c) 1630 7425 3378 (d) 1630 7425 338
- 31.📅 The digits 07081996 are a date: day, month, year. Which chunking shows the date? (a) 0708/19/96 (b) 070/819/96 (c) 07/0819/96 (d) 07/08/1996
- 32.📅 The digits 05051973 are a date: day, month, year. Which chunking shows the date? (a) 05/0519/73 (b) 05/05/1973 (c) 050/519/73 (d) 0505/19/73
- 33.🔢 You want to remember the number 1493496868. Which chunked version keeps every digit in the same order? (a) 149 349 68668 (b) 149 496 868 (c) 149 349 6868 (d) 149 439 6868
- 34.🔢 You want to remember the number 415205722. Which chunked version keeps every digit in the same order? (a) 415 205 722 (b) 441 520 5722 (c) 452 057 22 (d) 415 207 522
- 35.🔢 You want to remember the number 748221075. Which chunked version keeps every digit in the same order? (a) 748 221 075 (b) 748 221 75 (c) 748 220 175 (d) 748 822 1075
- 36.🔢 Why is 987 654 3210 easier to hold than 9876543210? (a) it is a smaller number (b) it has fewer digits (c) three chunks, not ten (d) it is printed bigger
- 37.🔢 You want to remember the number 5099901259. Which chunked version keeps every digit in the same order? (a) 590 990 1259 (b) 509 990 1259 (c) 509 990 12599 (d) 509 991 259
- 38.🔢 You want to remember the number 3022982033. Which chunked version keeps every digit in the same order? (a) 302 229 82033 (b) 320 298 2033 (c) 302 298 2033 (d) 302 282 033
- 39.🔢 You want to remember the number 201010760. Which chunked version keeps every digit in the same order? (a) 200 101 0760 (b) 201 007 60 (c) 201 010 760 (d) 210 010 760
- 40.🔢 You want to remember the number 400534730840. Which chunked version keeps every digit in the same order? (a) 4005 3473 0840 (b) 4005 3473 0480 (c) 4005 3473 080 (d) 4005 3477 30840
Answer key
- splitting into groups
- 177 013 6075
- 8
- 5950 0201 0088
- 5
- 19/04/2005
- 09/06/1998
- means something to you
- 28/08/2018
- 4
- 292 246 410
- 04/10/2016
- 781 730 390
- 721 327 310
- 5
- 6
- 192 609 640
- 7
- 674 086 2050
- 224 533 322
- 2
- 3818 9413 7021
- 02/06/1996
- 2
- 22/09/1963
- 6
- 552 116 5303
- 841 244 755
- 07/02/1969
- 1630 7425 3378
- 07/08/1996
- 05/05/1973
- 149 349 6868
- 415 205 722
- 748 221 075
- three chunks, not ten
- 509 990 1259
- 302 298 2033
- 201 010 760
- 4005 3473 0840
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