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.🔢 Why is 987 654 3210 easier to hold than 9876543210? (a) it has fewer digits (b) it is a smaller number (c) three chunks, not ten (d) it is printed bigger
- 2.🔢 You want to remember the number 135299505080. Which chunked version keeps every digit in the same order? (a) 1352 9950 50800 (b) 1352 9950 5800 (c) 1352 9950 080 (d) 1352 9950 5080
- 3.🔢 A 10-digit number is split into chunks of 2 digits each. How many chunks is that?
- 4.📅 The digits 20021963 are a date: day, month, year. Which chunking shows the date? (a) 2002/19/63 (b) 200/219/63 (c) 20/02/1963 (d) 20/0219/63
- 5.🔢 A 9-digit number is split into chunks of 3 digits each. How many chunks is that?
- 6.📅 The digits 15081978 are a date: day, month, year. Which chunking shows the date? (a) 1508/19/78 (b) 15/0819/78 (c) 15/08/1978 (d) 150/819/78
- 7.🔢 A 6-digit number is split into chunks of 2 digits each. How many chunks is that?
- 8.🔢 You want to remember the number 368921215. Which chunked version keeps every digit in the same order? (a) 366 892 1215 (b) 368 921 125 (c) 368 921 25 (d) 368 921 215
- 9.🔢 You want to remember the number 3057039208. Which chunked version keeps every digit in the same order? (a) 035 703 9208 (b) 305 570 39208 (c) 305 703 9208 (d) 305 703 928
- 10.🔢 Instead of holding 12 separate digits, you hold them as 4 chunks. How many fewer things do you hold in mind?
- 11.🔢 You want to remember the number 320494963. Which chunked version keeps every digit in the same order? (a) 320 494 963 (b) 320 494 93 (c) 320 049 4963 (d) 320 449 963
- 12.🔢 Instead of holding 12 separate digits, you hold them as 3 chunks. How many fewer things do you hold in mind?
- 13.📅 The digits 13121992 are a date: day, month, year. Which chunking shows the date? (a) 13/12/1992 (b) 1312/19/92 (c) 13/1219/92 (d) 131/219/92
- 14.🔢 You want to remember the number 3044622509. Which chunked version keeps every digit in the same order? (a) 304 462 509 (b) 304 462 22509 (c) 340 462 2509 (d) 304 462 2509
- 15.🔢 Chunking works for… (a) only pictures (b) nothing at all (c) only numbers (d) numbers and letter lists
- 16.🔢 You want to remember the number 403480173. Which chunked version keeps every digit in the same order? (a) 403 481 73 (b) 403 408 173 (c) 400 348 0173 (d) 403 480 173
- 17.🔢 A chunk is easiest to keep when it… (a) means something to you (b) is very long (c) changes daily (d) has no pattern
- 18.📅 The digits 14012020 are a date: day, month, year. Which chunking shows the date? (a) 14/01/2020 (b) 14/0120/20 (c) 140/120/20 (d) 1401/20/20
- 19.🔢 A 12-digit number is split into chunks of 4 digits each. How many chunks is that?
- 20.🔢 Instead of holding 11 separate digits, you hold them as 4 chunks. How many fewer things do you hold in mind?
- 21.📅 The digits 19112018 are a date: day, month, year. Which chunking shows the date? (a) 19/11/2018 (b) 19/1120/18 (c) 1911/20/18 (d) 191/120/18
- 22.🔢 You want to remember the number 298246352. Which chunked version keeps every digit in the same order? (a) 289 246 352 (b) 282 463 52 (c) 298 246 352 (d) 298 246 3352
- 23.🔢 You want to remember the number 715767616. Which chunked version keeps every digit in the same order? (a) 715 767 166 (b) 715 767 616 (c) 715 767 6166 (d) 715 776 16
- 24.🔢 You want to remember the number 892189564. Which chunked version keeps every digit in the same order? (a) 892 188 9564 (b) 892 195 64 (c) 891 289 564 (d) 892 189 564
- 25.📅 The digits 25121956 are a date: day, month, year. Which chunking shows the date? (a) 25/12/1956 (b) 2512/19/56 (c) 251/219/56 (d) 25/1219/56
- 26.🔢 Instead of holding 8 separate digits, you hold them as 3 chunks. How many fewer things do you hold in mind?
- 27.🔢 What is chunking? (a) saying it backwards (b) writing it twice (c) reading very fast (d) splitting into groups
- 28.📅 The digits 28081997 are a date: day, month, year. Which chunking shows the date? (a) 28/0819/97 (b) 2808/19/97 (c) 280/819/97 (d) 28/08/1997
- 29.🔢 Which is a good way to chunk the year 1947? (a) 1 9 4 7 (b) 194 and 7 (c) 1 and 947 (d) 19 and 47
- 30.🔢 A 16-digit number is split into chunks of 4 digits each. How many chunks is that?
- 31.🔢 Instead of holding 8 separate digits, you hold them as 4 chunks. How many fewer things do you hold in mind?
- 32.📅 The digits 09021960 are a date: day, month, year. Which chunking shows the date? (a) 090/219/60 (b) 0902/19/60 (c) 09/0219/60 (d) 09/02/1960
- 33.📅 The digits 25071966 are a date: day, month, year. Which chunking shows the date? (a) 25/0719/66 (b) 25/07/1966 (c) 250/719/66 (d) 2507/19/66
- 34.🔢 You want to remember the number 1668241400. Which chunked version keeps every digit in the same order? (a) 166 824 14000 (b) 166 824 1400 (c) 616 824 1400 (d) 166 841 400
- 35.📅 The digits 07052022 are a date: day, month, year. Which chunking shows the date? (a) 07/05/2022 (b) 07/0520/22 (c) 0705/20/22 (d) 070/520/22
- 36.📅 The digits 25021950 are a date: day, month, year. Which chunking shows the date? (a) 250/219/50 (b) 25/0219/50 (c) 25/02/1950 (d) 2502/19/50
- 37.🔢 You want to remember the number 267275818. Which chunked version keeps every digit in the same order? (a) 267 275 881 (b) 267 275 818 (c) 267 275 88 (d) 267 275 8818
- 38.🔢 You want to remember the number 686585004309. Which chunked version keeps every digit in the same order? (a) 6868 5500 4309 (b) 6865 5004 309 (c) 6865 5850 04309 (d) 6865 8500 4309
- 39.🔢 You want to remember the number 670380877. Which chunked version keeps every digit in the same order? (a) 670 308 877 (b) 603 808 77 (c) 670 380 877 (d) 667 038 0877
- 40.📅 The digits 20081979 are a date: day, month, year. Which chunking shows the date? (a) 20/08/1979 (b) 2008/19/79 (c) 200/819/79 (d) 20/0819/79
Answer key
- three chunks, not ten
- 1352 9950 5080
- 5
- 20/02/1963
- 3
- 15/08/1978
- 3
- 368 921 215
- 305 703 9208
- 8
- 320 494 963
- 9
- 13/12/1992
- 304 462 2509
- numbers and letter lists
- 403 480 173
- means something to you
- 14/01/2020
- 3
- 7
- 19/11/2018
- 298 246 352
- 715 767 616
- 892 189 564
- 25/12/1956
- 5
- splitting into groups
- 28/08/1997
- 19 and 47
- 4
- 4
- 09/02/1960
- 25/07/1966
- 166 824 1400
- 07/05/2022
- 25/02/1950
- 267 275 818
- 6865 8500 4309
- 670 380 877
- 20/08/1979
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