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) saying it backwards (b) reading very fast (c) splitting into groups (d) writing it twice
- 2.🔢 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
- 3.🔢 Why is 987 654 3210 easier to hold than 9876543210? (a) it is a smaller number (b) it has fewer digits (c) it is printed bigger (d) three chunks, not ten
- 4.🔢 You want to remember the number 4409257302. Which chunked version keeps every digit in the same order? (a) 409 257 302 (b) 440 925 73022 (c) 440 295 7302 (d) 440 925 7302
- 5.🔢 You want to remember the number 241985050. Which chunked version keeps every digit in the same order? (a) 241 985 050 (b) 421 985 050 (c) 219 850 50 (d) 241 985 0500
- 6.🔢 Instead of holding 9 separate digits, you hold them as 4 chunks. How many fewer things do you hold in mind?
- 7.🔢 You want to remember the number 745951881. Which chunked version keeps every digit in the same order? (a) 745 958 181 (b) 774 595 1881 (c) 459 518 81 (d) 745 951 881
- 8.🔢 Instead of holding 9 separate digits, you hold them as 3 chunks. How many fewer things do you hold in mind?
- 9.🔢 Instead of holding 11 separate digits, you hold them as 4 chunks. How many fewer things do you hold in mind?
- 10.🔢 You want to remember the number 6960178144. Which chunked version keeps every digit in the same order? (a) 696 017 814 (b) 696 018 7144 (c) 669 601 78144 (d) 696 017 8144
- 11.🔢 Instead of holding 10 separate digits, you hold them as 3 chunks. How many fewer things do you hold in mind?
- 12.🔢 You want to remember the number 125672074. Which chunked version keeps every digit in the same order? (a) 125 762 074 (b) 125 567 2074 (c) 125 672 074 (d) 125 720 74
- 13.🔢 You want to remember the number 470110095595. Which chunked version keeps every digit in the same order? (a) 4701 1009 5595 (b) 7401 1009 5595 (c) 4701 1009 595 (d) 4701 1000 95595
- 14.🔢 You want to remember the number 285071805. Which chunked version keeps every digit in the same order? (a) 258 071 805 (b) 285 071 805 (c) 285 077 1805 (d) 285 078 05
- 15.🔢 A 6-digit number is split into chunks of 2 digits each. How many chunks is that?
- 16.📅 The digits 23122011 are a date: day, month, year. Which chunking shows the date? (a) 2312/20/11 (b) 231/220/11 (c) 23/1220/11 (d) 23/12/2011
- 17.🔢 You want to remember the number 735616102591. Which chunked version keeps every digit in the same order? (a) 7356 1610 5291 (b) 7356 1610 2591 (c) 7356 1102 591 (d) 7356 1610 02591
- 18.🔢 A 6-digit number is split into chunks of 3 digits each. How many chunks is that?
- 19.📅 The digits 06121968 are a date: day, month, year. Which chunking shows the date? (a) 06/12/1968 (b) 0612/19/68 (c) 06/1219/68 (d) 061/219/68
- 20.📅 The digits 15021993 are a date: day, month, year. Which chunking shows the date? (a) 1502/19/93 (b) 15/0219/93 (c) 15/02/1993 (d) 150/219/93
- 21.🔢 A chunk is easiest to keep when it… (a) has no pattern (b) is very long (c) means something to you (d) changes daily
- 22.🔢 You want to remember the number 427128825103. Which chunked version keeps every digit in the same order? (a) 4271 8825 103 (b) 4271 2882 5103 (c) 4272 1882 5103 (d) 4227 1288 25103
- 23.🔢 You want to remember the number 7263621980. Which chunked version keeps every digit in the same order? (a) 726 362 1980 (b) 726 362 11980 (c) 276 362 1980 (d) 726 621 980
- 24.📅 The digits 09061957 are a date: day, month, year. Which chunking shows the date? (a) 0906/19/57 (b) 090/619/57 (c) 09/06/1957 (d) 09/0619/57
- 25.📅 The digits 19051957 are a date: day, month, year. Which chunking shows the date? (a) 19/0519/57 (b) 190/519/57 (c) 1905/19/57 (d) 19/05/1957
- 26.🔢 You want to remember the number 9408409072. Which chunked version keeps every digit in the same order? (a) 940 840 99072 (b) 940 849 0072 (c) 940 840 972 (d) 940 840 9072
- 27.🔢 You want to remember the number 2033638959. Which chunked version keeps every digit in the same order? (a) 203 363 8959 (b) 203 363 89599 (c) 203 363 959 (d) 230 363 8959
- 28.🔢 You want to remember the number 741484153208. Which chunked version keeps every digit in the same order? (a) 7414 8415 3208 (b) 7441 8415 3208 (c) 7414 8415 32008 (d) 7448 4153 208
- 29.🔢 You want to remember the number 4469151109. Which chunked version keeps every digit in the same order? (a) 446 915 109 (b) 446 915 1190 (c) 446 915 51109 (d) 446 915 1109
- 30.🔢 Instead of holding 12 separate digits, you hold them as 4 chunks. How many fewer things do you hold in mind?
- 31.🔢 A 8-digit number is split into chunks of 4 digits each. How many chunks is that?
- 32.🔢 A 10-digit number is split into chunks of 2 digits each. How many chunks is that?
- 33.📅 The digits 20101995 are a date: day, month, year. Which chunking shows the date? (a) 2010/19/95 (b) 20/10/1995 (c) 20/1019/95 (d) 201/019/95
- 34.🔢 You want to remember the number 9965710940. Which chunked version keeps every digit in the same order? (a) 996 557 10940 (b) 996 571 040 (c) 996 570 1940 (d) 996 571 0940
- 35.🔢 You want to remember the number 441389133. Which chunked version keeps every digit in the same order? (a) 441 389 133 (b) 441 839 133 (c) 441 389 1333 (d) 443 891 33
- 36.🔢 You want to remember the number 230949462. Which chunked version keeps every digit in the same order? (a) 230 949 62 (b) 230 949 642 (c) 230 994 9462 (d) 230 949 462
- 37.🔢 A 4-digit number is split into chunks of 2 digits each. How many chunks is that?
- 38.🔢 You want to remember the number 8089352176. Which chunked version keeps every digit in the same order? (a) 808 935 21766 (b) 808 935 2176 (c) 808 395 2176 (d) 808 932 176
- 39.🔢 You want to remember the number 165211305. Which chunked version keeps every digit in the same order? (a) 165 211 35 (b) 165 211 305 (c) 165 211 035 (d) 165 221 1305
- 40.🔢 A 8-digit number is split into chunks of 2 digits each. How many chunks is that?
Answer key
- splitting into groups
- 19 and 47
- three chunks, not ten
- 440 925 7302
- 241 985 050
- 5
- 745 951 881
- 6
- 7
- 696 017 8144
- 7
- 125 672 074
- 4701 1009 5595
- 285 071 805
- 3
- 23/12/2011
- 7356 1610 2591
- 2
- 06/12/1968
- 15/02/1993
- means something to you
- 4271 2882 5103
- 726 362 1980
- 09/06/1957
- 19/05/1957
- 940 840 9072
- 203 363 8959
- 7414 8415 3208
- 446 915 1109
- 8
- 2
- 5
- 20/10/1995
- 996 571 0940
- 441 389 133
- 230 949 462
- 2
- 808 935 2176
- 165 211 305
- 4
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