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 09052020 are a date: day, month, year. Which chunking shows the date? (a) 0905/20/20 (b) 090/520/20 (c) 09/0520/20 (d) 09/05/2020
- 2.🔢 You want to remember the number 552918187. Which chunked version keeps every digit in the same order? (a) 529 181 87 (b) 552 918 1887 (c) 552 198 187 (d) 552 918 187
- 3.🔢 A chunk is easiest to keep when it… (a) means something to you (b) has no pattern (c) changes daily (d) is very long
- 4.📅 The digits 23102004 are a date: day, month, year. Which chunking shows the date? (a) 23/1020/04 (b) 231/020/04 (c) 23/10/2004 (d) 2310/20/04
- 5.📅 The digits 04101957 are a date: day, month, year. Which chunking shows the date? (a) 0410/19/57 (b) 041/019/57 (c) 04/10/1957 (d) 04/1019/57
- 6.🔢 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
- 7.🔢 Which is a good way to chunk the year 1947? (a) 1 and 947 (b) 1 9 4 7 (c) 19 and 47 (d) 194 and 7
- 8.📅 The digits 18061977 are a date: day, month, year. Which chunking shows the date? (a) 180/619/77 (b) 1806/19/77 (c) 18/06/1977 (d) 18/0619/77
- 9.🔢 A 8-digit number is split into chunks of 4 digits each. How many chunks is that?
- 10.🔢 A 12-digit number is split into chunks of 4 digits each. How many chunks is that?
- 11.📅 The digits 05032024 are a date: day, month, year. Which chunking shows the date? (a) 0503/20/24 (b) 050/320/24 (c) 05/0320/24 (d) 05/03/2024
- 12.🔢 You want to remember the number 7014908143. Which chunked version keeps every digit in the same order? (a) 701 498 0143 (b) 701 490 8143 (c) 714 908 143 (d) 701 490 81443
- 13.🔢 You want to remember the number 9303242553. Which chunked version keeps every digit in the same order? (a) 930 324 255 (b) 930 324 2535 (c) 930 324 2553 (d) 930 324 25553
- 14.🔢 You want to remember the number 2008900039. Which chunked version keeps every digit in the same order? (a) 208 090 0039 (b) 200 890 0039 (c) 200 890 00039 (d) 200 890 003
- 15.📅 The digits 03051960 are a date: day, month, year. Which chunking shows the date? (a) 030/519/60 (b) 03/0519/60 (c) 03/05/1960 (d) 0305/19/60
- 16.🔢 What is chunking? (a) reading very fast (b) writing it twice (c) splitting into groups (d) saying it backwards
- 17.🔢 You want to remember the number 2207432810. Which chunked version keeps every digit in the same order? (a) 202 743 2810 (b) 220 743 2810 (c) 207 432 810 (d) 220 743 22810
- 18.📅 The digits 06032025 are a date: day, month, year. Which chunking shows the date? (a) 060/320/25 (b) 0603/20/25 (c) 06/0320/25 (d) 06/03/2025
- 19.📅 The digits 01031953 are a date: day, month, year. Which chunking shows the date? (a) 01/0319/53 (b) 01/03/1953 (c) 010/319/53 (d) 0103/19/53
- 20.📅 The digits 18011993 are a date: day, month, year. Which chunking shows the date? (a) 180/119/93 (b) 18/01/1993 (c) 1801/19/93 (d) 18/0119/93
- 21.🔢 You want to remember the number 850949414568. Which chunked version keeps every digit in the same order? (a) 8509 4941 44568 (b) 8509 4914 4568 (c) 8509 4941 4568 (d) 8504 9414 568
- 22.🔢 Chunking works for… (a) only numbers (b) numbers and letter lists (c) only pictures (d) nothing at all
- 23.📅 The digits 07051982 are a date: day, month, year. Which chunking shows the date? (a) 070/519/82 (b) 07/0519/82 (c) 07/05/1982 (d) 0705/19/82
- 24.🔢 A 4-digit number is split into chunks of 2 digits each. How many chunks is that?
- 25.🔢 A 12-digit number is split into chunks of 3 digits each. How many chunks is that?
- 26.🔢 You want to remember the number 651831821257. Which chunked version keeps every digit in the same order? (a) 6518 3182 157 (b) 6518 8318 21257 (c) 6518 3182 1257 (d) 6158 3182 1257
- 27.🔢 You want to remember the number 2987366267. Which chunked version keeps every digit in the same order? (a) 297 836 6267 (b) 298 736 62267 (c) 298 736 6267 (d) 298 766 267
- 28.🔢 Instead of holding 8 separate digits, you hold them as 4 chunks. How many fewer things do you hold in mind?
- 29.📅 The digits 12081960 are a date: day, month, year. Which chunking shows the date? (a) 1208/19/60 (b) 12/08/1960 (c) 12/0819/60 (d) 120/819/60
- 30.🔢 You want to remember the number 723016510. Which chunked version keeps every digit in the same order? (a) 723 065 10 (b) 723 061 510 (c) 723 016 5510 (d) 723 016 510
- 31.📅 The digits 02021961 are a date: day, month, year. Which chunking shows the date? (a) 02/0219/61 (b) 020/219/61 (c) 02/02/1961 (d) 0202/19/61
- 32.🔢 You want to remember the number 427633947. Which chunked version keeps every digit in the same order? (a) 426 733 947 (b) 427 633 47 (c) 427 633 947 (d) 427 663 3947
- 33.🔢 You want to remember the number 9542783646. Which chunked version keeps every digit in the same order? (a) 954 278 3646 (b) 945 278 3646 (c) 942 783 646 (d) 954 427 83646
- 34.🔢 A 15-digit number is split into chunks of 3 digits each. How many chunks is that?
- 35.📅 The digits 10072013 are a date: day, month, year. Which chunking shows the date? (a) 1007/20/13 (b) 10/07/2013 (c) 100/720/13 (d) 10/0720/13
- 36.🔢 You want to remember the number 2746630017. Which chunked version keeps every digit in the same order? (a) 274 630 017 (b) 274 466 30017 (c) 274 660 3017 (d) 274 663 0017
- 37.📅 The digits 15012013 are a date: day, month, year. Which chunking shows the date? (a) 15/0120/13 (b) 1501/20/13 (c) 15/01/2013 (d) 150/120/13
- 38.🔢 Instead of holding 12 separate digits, you hold them as 3 chunks. How many fewer things do you hold in mind?
- 39.📅 The digits 15042025 are a date: day, month, year. Which chunking shows the date? (a) 15/0420/25 (b) 150/420/25 (c) 15/04/2025 (d) 1504/20/25
- 40.🔢 A 6-digit number is split into chunks of 3 digits each. How many chunks is that?
Answer key
- 09/05/2020
- 552 918 187
- means something to you
- 23/10/2004
- 04/10/1957
- three chunks, not ten
- 19 and 47
- 18/06/1977
- 2
- 3
- 05/03/2024
- 701 490 8143
- 930 324 2553
- 200 890 0039
- 03/05/1960
- splitting into groups
- 220 743 2810
- 06/03/2025
- 01/03/1953
- 18/01/1993
- 8509 4941 4568
- numbers and letter lists
- 07/05/1982
- 2
- 4
- 6518 3182 1257
- 298 736 6267
- 4
- 12/08/1960
- 723 016 510
- 02/02/1961
- 427 633 947
- 954 278 3646
- 5
- 10/07/2013
- 274 663 0017
- 15/01/2013
- 9
- 15/04/2025
- 2
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