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 06051989 are a date: day, month, year. Which chunking shows the date? (a) 06/05/1989 (b) 0605/19/89 (c) 06/0519/89 (d) 060/519/89
- 2.🔢 Instead of holding 11 separate digits, you hold them as 4 chunks. How many fewer things do you hold in mind?
- 3.📅 The digits 24071958 are a date: day, month, year. Which chunking shows the date? (a) 2407/19/58 (b) 240/719/58 (c) 24/0719/58 (d) 24/07/1958
- 4.🔢 A 10-digit number is split into chunks of 2 digits each. How many chunks is that?
- 5.🔢 A 12-digit number is split into chunks of 3 digits each. How many chunks is that?
- 6.🔢 Which is a good way to chunk the year 1947? (a) 194 and 7 (b) 1 and 947 (c) 19 and 47 (d) 1 9 4 7
- 7.📅 The digits 19031956 are a date: day, month, year. Which chunking shows the date? (a) 19/03/1956 (b) 190/319/56 (c) 19/0319/56 (d) 1903/19/56
- 8.📅 The digits 27012018 are a date: day, month, year. Which chunking shows the date? (a) 27/01/2018 (b) 2701/20/18 (c) 27/0120/18 (d) 270/120/18
- 9.🔢 A 16-digit number is split into chunks of 4 digits each. How many chunks is that?
- 10.🔢 You want to remember the number 596101428138. Which chunked version keeps every digit in the same order? (a) 5961 0142 8138 (b) 5961 1428 138 (c) 5691 0142 8138 (d) 5961 0142 88138
- 11.📅 The digits 27082022 are a date: day, month, year. Which chunking shows the date? (a) 2708/20/22 (b) 270/820/22 (c) 27/0820/22 (d) 27/08/2022
- 12.🔢 Instead of holding 8 separate digits, you hold them as 4 chunks. How many fewer things do you hold in mind?
- 13.🔢 Chunking works for… (a) numbers and letter lists (b) nothing at all (c) only pictures (d) only numbers
- 14.🔢 You want to remember the number 133708014. Which chunked version keeps every digit in the same order? (a) 133 708 014 (b) 133 708 8014 (c) 133 708 104 (d) 133 080 14
- 15.🔢 You want to remember the number 165110192. Which chunked version keeps every digit in the same order? (a) 165 110 1192 (b) 165 111 92 (c) 165 111 092 (d) 165 110 192
- 16.🔢 You want to remember the number 646707052. Which chunked version keeps every digit in the same order? (a) 647 070 52 (b) 646 707 052 (c) 646 770 052 (d) 646 707 0522
- 17.🔢 You want to remember the number 912738050970. Which chunked version keeps every digit in the same order? (a) 9127 7380 50970 (b) 9127 3805 097 (c) 9127 3800 5970 (d) 9127 3805 0970
- 18.🔢 You want to remember the number 798373341009. Which chunked version keeps every digit in the same order? (a) 9783 7334 1009 (b) 7983 3733 41009 (c) 7987 3341 009 (d) 7983 7334 1009
- 19.🔢 You want to remember the number 7476255500. Which chunked version keeps every digit in the same order? (a) 774 625 5500 (b) 747 625 5500 (c) 747 625 500 (d) 747 662 55500
- 20.🔢 You want to remember the number 625783220759. Which chunked version keeps every digit in the same order? (a) 6257 8322 07599 (b) 6257 8322 0759 (c) 6278 3220 759 (d) 6275 8322 0759
- 21.🔢 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
- 22.📅 The digits 27081967 are a date: day, month, year. Which chunking shows the date? (a) 27/08/1967 (b) 2708/19/67 (c) 270/819/67 (d) 27/0819/67
- 23.📅 The digits 21041960 are a date: day, month, year. Which chunking shows the date? (a) 21/0419/60 (b) 210/419/60 (c) 2104/19/60 (d) 21/04/1960
- 24.🔢 You want to remember the number 489664404318. Which chunked version keeps every digit in the same order? (a) 4896 6440 43118 (b) 4896 6440 4318 (c) 8966 4404 318 (d) 4896 6440 3418
- 25.🔢 You want to remember the number 157735547. Which chunked version keeps every digit in the same order? (a) 157 735 5447 (b) 175 735 547 (c) 157 735 47 (d) 157 735 547
- 26.🔢 Instead of holding 11 separate digits, you hold them as 3 chunks. How many fewer things do you hold in mind?
- 27.🔢 You want to remember the number 1929824337. Which chunked version keeps every digit in the same order? (a) 192 982 4337 (b) 129 824 337 (c) 192 998 24337 (d) 129 982 4337
- 28.🔢 You want to remember the number 665254126921. Which chunked version keeps every digit in the same order? (a) 6652 5412 69211 (b) 6652 5412 691 (c) 6652 5412 9621 (d) 6652 5412 6921
- 29.📅 The digits 07092017 are a date: day, month, year. Which chunking shows the date? (a) 07/0920/17 (b) 07/09/2017 (c) 070/920/17 (d) 0709/20/17
- 30.🔢 You want to remember the number 558473651. Which chunked version keeps every digit in the same order? (a) 584 736 51 (b) 558 473 6511 (c) 558 473 615 (d) 558 473 651
- 31.🔢 You want to remember the number 720250105719. Which chunked version keeps every digit in the same order? (a) 7202 5011 05719 (b) 7202 5015 0719 (c) 7202 5010 5719 (d) 7202 5015 719
- 32.🔢 A chunk is easiest to keep when it… (a) is very long (b) has no pattern (c) changes daily (d) means something to you
- 33.🔢 You want to remember the number 574262818. Which chunked version keeps every digit in the same order? (a) 574 628 18 (b) 574 262 8818 (c) 574 262 818 (d) 572 462 818
- 34.🔢 A 8-digit number is split into chunks of 4 digits each. How many chunks is that?
- 35.🔢 You want to remember the number 708733276. Which chunked version keeps every digit in the same order? (a) 708 733 276 (b) 708 733 267 (c) 087 332 76 (d) 770 873 3276
- 36.🔢 You want to remember the number 352013216128. Which chunked version keeps every digit in the same order? (a) 3520 1321 6128 (b) 3520 1326 1128 (c) 3552 0132 16128 (d) 3520 1316 128
- 37.🔢 Instead of holding 10 separate digits, you hold them as 3 chunks. How many fewer things do you hold in mind?
- 38.📅 The digits 02031978 are a date: day, month, year. Which chunking shows the date? (a) 02/03/1978 (b) 02/0319/78 (c) 0203/19/78 (d) 020/319/78
- 39.🔢 You want to remember the number 521519771832. Which chunked version keeps every digit in the same order? (a) 2515 1977 1832 (b) 5215 1977 1832 (c) 5251 9771 832 (d) 5215 1977 18322
- 40.🔢 What is chunking? (a) reading very fast (b) writing it twice (c) splitting into groups (d) saying it backwards
Answer key
- 06/05/1989
- 7
- 24/07/1958
- 5
- 4
- 19 and 47
- 19/03/1956
- 27/01/2018
- 4
- 5961 0142 8138
- 27/08/2022
- 4
- numbers and letter lists
- 133 708 014
- 165 110 192
- 646 707 052
- 9127 3805 0970
- 7983 7334 1009
- 747 625 5500
- 6257 8322 0759
- three chunks, not ten
- 27/08/1967
- 21/04/1960
- 4896 6440 4318
- 157 735 547
- 8
- 192 982 4337
- 6652 5412 6921
- 07/09/2017
- 558 473 651
- 7202 5010 5719
- means something to you
- 574 262 818
- 2
- 708 733 276
- 3520 1321 6128
- 7
- 02/03/1978
- 5215 1977 1832
- splitting into groups
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