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.📅 The digits 23061970 are a date: day, month, year. Which chunking shows the date? (a) 230/619/70 (b) 2306/19/70 (c) 23/06/1970 (d) 23/0619/70
- 2.🔢 You want to remember the number 6708633151. Which chunked version keeps every digit in the same order? (a) 670 863 151 (b) 670 863 3151 (c) 667 086 33151 (d) 670 836 3151
- 3.🔢 A chunk is easiest to keep when it… (a) has no pattern (b) is very long (c) changes daily (d) means something to you
- 4.🔢 Which is a good way to chunk the year 1947? (a) 1 9 4 7 (b) 194 and 7 (c) 19 and 47 (d) 1 and 947
- 5.🔢 Chunking works for… (a) nothing at all (b) only pictures (c) only numbers (d) numbers and letter lists
- 6.🔢 Instead of holding 9 separate digits, you hold them as 4 chunks. How many fewer things do you hold in mind?
- 7.🔢 A 8-digit number is split into chunks of 2 digits each. How many chunks is that?
- 8.🔢 You want to remember the number 829007403820. Which chunked version keeps every digit in the same order? (a) 8290 0740 3820 (b) 8290 7040 3820 (c) 8290 0740 820 (d) 8829 0074 03820
- 9.🔢 Why is 987 654 3210 easier to hold than 9876543210? (a) it is printed bigger (b) it has fewer digits (c) three chunks, not ten (d) it is a smaller number
- 10.📅 The digits 06061977 are a date: day, month, year. Which chunking shows the date? (a) 060/619/77 (b) 06/0619/77 (c) 06/06/1977 (d) 0606/19/77
- 11.🔢 You want to remember the number 4165189706. Which chunked version keeps every digit in the same order? (a) 416 511 89706 (b) 416 518 9706 (c) 461 518 9706 (d) 415 189 706
- 12.🔢 A 4-digit number is split into chunks of 2 digits each. How many chunks is that?
- 13.🔢 You want to remember the number 382381055. Which chunked version keeps every digit in the same order? (a) 328 381 055 (b) 382 310 55 (c) 382 381 055 (d) 382 381 0055
- 14.🔢 You want to remember the number 8280690496. Which chunked version keeps every digit in the same order? (a) 880 690 496 (b) 828 069 0496 (c) 828 609 0496 (d) 828 069 90496
- 15.📅 The digits 17032023 are a date: day, month, year. Which chunking shows the date? (a) 170/320/23 (b) 17/03/2023 (c) 1703/20/23 (d) 17/0320/23
- 16.🔢 What is chunking? (a) saying it backwards (b) writing it twice (c) splitting into groups (d) reading very fast
- 17.🔢 Instead of holding 8 separate digits, you hold them as 3 chunks. How many fewer things do you hold in mind?
- 18.🔢 You want to remember the number 7001609366. Which chunked version keeps every digit in the same order? (a) 770 016 09366 (b) 701 609 366 (c) 700 160 9366 (d) 701 060 9366
- 19.🔢 Instead of holding 12 separate digits, you hold them as 4 chunks. How many fewer things do you hold in mind?
- 20.🔢 Instead of holding 11 separate digits, you hold them as 3 chunks. How many fewer things do you hold in mind?
- 21.🔢 You want to remember the number 8000800052. Which chunked version keeps every digit in the same order? (a) 800 800 0052 (b) 800 080 0052 (c) 800 080 00052 (d) 800 080 052
- 22.🔢 A 12-digit number is split into chunks of 4 digits each. How many chunks is that?
- 23.🔢 You want to remember the number 7406052249. Which chunked version keeps every digit in the same order? (a) 740 605 22249 (b) 740 605 2249 (c) 740 605 2294 (d) 406 052 249
- 24.📅 The digits 04101965 are a date: day, month, year. Which chunking shows the date? (a) 0410/19/65 (b) 04/1019/65 (c) 041/019/65 (d) 04/10/1965
- 25.📅 The digits 24091975 are a date: day, month, year. Which chunking shows the date? (a) 2409/19/75 (b) 24/09/1975 (c) 24/0919/75 (d) 240/919/75
- 26.📅 The digits 07032012 are a date: day, month, year. Which chunking shows the date? (a) 070/320/12 (b) 0703/20/12 (c) 07/0320/12 (d) 07/03/2012
- 27.🔢 You want to remember the number 250682771. Which chunked version keeps every digit in the same order? (a) 250 682 771 (b) 250 687 71 (c) 250 668 2771 (d) 250 687 271
- 28.🔢 Instead of holding 10 separate digits, you hold them as 3 chunks. How many fewer things do you hold in mind?
- 29.🔢 You want to remember the number 262296836. Which chunked version keeps every digit in the same order? (a) 262 298 636 (b) 262 298 36 (c) 262 296 6836 (d) 262 296 836
- 30.🔢 A 15-digit number is split into chunks of 3 digits each. How many chunks is that?
- 31.📅 The digits 09061991 are a date: day, month, year. Which chunking shows the date? (a) 090/619/91 (b) 0906/19/91 (c) 09/0619/91 (d) 09/06/1991
- 32.📅 The digits 22121991 are a date: day, month, year. Which chunking shows the date? (a) 2212/19/91 (b) 221/219/91 (c) 22/12/1991 (d) 22/1219/91
- 33.📅 The digits 08021993 are a date: day, month, year. Which chunking shows the date? (a) 080/219/93 (b) 0802/19/93 (c) 08/02/1993 (d) 08/0219/93
- 34.🔢 A 20-digit number is split into chunks of 4 digits each. How many chunks is that?
- 35.🔢 Instead of holding 11 separate digits, you hold them as 4 chunks. How many fewer things do you hold in mind?
- 36.🔢 Instead of holding 8 separate digits, you hold them as 4 chunks. How many fewer things do you hold in mind?
- 37.📅 The digits 25041990 are a date: day, month, year. Which chunking shows the date? (a) 2504/19/90 (b) 25/04/1990 (c) 250/419/90 (d) 25/0419/90
- 38.🔢 You want to remember the number 7647705726. Which chunked version keeps every digit in the same order? (a) 766 477 05726 (b) 747 705 726 (c) 764 770 5762 (d) 764 770 5726
- 39.🔢 You want to remember the number 629247910. Which chunked version keeps every digit in the same order? (a) 629 247 10 (b) 629 247 910 (c) 269 247 910 (d) 629 247 9110
- 40.📅 The digits 24111979 are a date: day, month, year. Which chunking shows the date? (a) 2411/19/79 (b) 24/11/1979 (c) 24/1119/79 (d) 241/119/79
Answer key
- 23/06/1970
- 670 863 3151
- means something to you
- 19 and 47
- numbers and letter lists
- 5
- 4
- 8290 0740 3820
- three chunks, not ten
- 06/06/1977
- 416 518 9706
- 2
- 382 381 055
- 828 069 0496
- 17/03/2023
- splitting into groups
- 5
- 700 160 9366
- 8
- 8
- 800 080 0052
- 3
- 740 605 2249
- 04/10/1965
- 24/09/1975
- 07/03/2012
- 250 682 771
- 7
- 262 296 836
- 5
- 09/06/1991
- 22/12/1991
- 08/02/1993
- 5
- 7
- 4
- 25/04/1990
- 764 770 5726
- 629 247 910
- 24/11/1979
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