Coding Decoding Worksheet
How to think it through (Letter by letter): Write the word above its code and compare each pair of letters. Find the rule: the same move (+1, −2 …), opposite letters (A ↔ Z, B ↔ Y), or the word reversed. Apply the same rule to the new word. After Z comes A again.
NameDateTime takenScore ___ / 40
- 1.If MILK is written as OKNM, how is PEN written in the same code? (a) RGP (b) QFO (c) SHQ (d) NCL
- 2.If WIND is written as VHMC, how is SUN written in the same code? (a) TVO (b) SUN (c) QSL (d) RTM
- 3.If RAIN is written as PYGL, how is FISH written in the same code? (a) HKUJ (b) DGQF (c) CFPE (d) EHRG
- 4.If DRUM is written as LTQC, how is BOAT written in the same code? (a) TAOB (b) ANZS (c) UBPC (d) SZNA
- 5.If COLD is written as BNKC, how is TREE written in the same code? (a) TREE (b) USFF (c) RPCC (d) SQDD
- 6.If BELL is written as LLEB, how is PARK written in the same code? (a) LSBQ (b) JQZO (c) QBSL (d) KRAP
- 7.If RAIN is written as TCKP, how is LION written in the same code? (a) JGML (b) NKQP (c) MJPO (d) OLRQ
- 8.If FROG is written as UILT, how is WIND written in the same code? (a) DRMW (b) XJOE (c) ESNX (d) CQLV
- 9.If MILK is written as JKHL, how is TREE written in the same code? (a) DDQS (b) SQDD (c) FFSU (d) EERT
- 10.If KITE is written as NLWH, how is DRUM written in the same code? (a) FTWO (b) AORJ (c) GUXP (d) HVYQ
- 11.If MILK is written as NROP, how is COLD written in the same code? (a) XLOW (b) WKNV (c) DPME (d) YMPX
- 12.If BELL is written as LLEB, how is DESK written in the same code? (a) JRDC (b) LTFE (c) EFTL (d) KSED
- 13.If SHIP is written as QJIT, how is CAT written in the same code? (a) SZB (b) TAC (c) DBU (d) UBD
- 14.If FISH is written as ITJG, how is LAMP written in the same code? (a) MBNQ (b) PMAL (c) QNBM (d) OLZK
- 15.If TOYS is written as UPZT, how is HAND written in the same code? (a) EOBI (b) IBOE (c) GZMC (d) JCPF
- 16.If BOOK is written as LPPC, how is MOON written in the same code? (a) NOOM (b) OPPN (c) NPPO (d) MNNL
- 17.If DOG is written as EPH, how is COLD written in the same code? (a) BNKC (b) EMPD (c) DPME (d) EQNF
- 18.If GOLD is written as DLOG, how is DESK written in the same code? (a) LTFE (b) KSED (c) JRDC (d) EFTL
- 19.If COLD is written as DPME, how is BOOK written in the same code? (a) LPPC (b) CPPL (c) ANNJ (d) DQQM
- 20.If DESK is written as CDRJ, how is CAT written in the same code? (a) CAT (b) DBU (c) AYR (d) BZS
- 21.If DESK is written as WVHP, how is RAIN written in the same code? (a) SBJO (b) HYQL (c) IZRM (d) JASN
- 22.If FISH is written as URHS, how is BALL written in the same code? (a) ZAPP (b) CBMM (c) YZOO (d) XYNN
- 23.If HAND is written as SZMW, how is FROG written in the same code? (a) GSPH (b) UILT (c) THKS (d) VJMU
- 24.If BOAT is written as TAOB, how is STAR written in the same code? (a) RATS (b) QZSR (c) SBUT (d) TUBS
- 25.If FISH is written as HSIF, how is RAIN written in the same code? (a) NIAR (b) OJBS (c) MHZQ (d) SBJO
- 26.If DESK is written as KSED, how is TOYS written in the same code? (a) TZPU (b) SYOT (c) UPZT (d) RXNS
- 27.If COLD is written as XLOW, how is TOYS written in the same code? (a) UPZT (b) FKAG (c) GLBH (d) HMCI
- 28.If KITE is written as PRGV, how is FISH written in the same code? (a) URHS (b) VSIT (c) GJTI (d) TQGR
- 29.If FROG is written as DPME, how is BELL written in the same code? (a) YBII (b) ZCJJ (c) ADKK (d) DGNN
- 30.If HAND is written as DNAH, how is TREE written in the same code? (a) DDQS (b) FFSU (c) USFF (d) EERT
- 31.If CAT is written as TAC, how is MOON written in the same code? (a) OPPN (b) MNNL (c) NPPO (d) NOOM
- 32.If FROG is written as UILT, how is HAND written in the same code? (a) TANX (b) IBOE (c) RYLV (d) SZMW
- 33.If TREE is written as GIVV, how is BALL written in the same code? (a) CBMM (b) XYNN (c) ZAPP (d) YZOO
- 34.If SUN is written as UWP, how is MILK written in the same code? (a) OKNM (b) PLON (c) NJML (d) KGJI
- 35.If DESK is written as FGUM, how is BELL written in the same code? (a) EHOO (b) ZCJJ (c) CFMM (d) DGNN
- 36.If STAR is written as RATS, how is BOAT written in the same code? (a) TAOB (b) UBPC (c) SZNA (d) CPBU
- 37.If MILK is written as NJML, how is DESK written in the same code? (a) LTFE (b) EFTL (c) FGUM (d) CDRJ
- 38.If DOG is written as WLT, how is MOON written in the same code? (a) NLLM (b) NPPO (c) MKKL (d) OMMN
- 39.If JUMP is written as MXPS, how is NEST written in the same code? (a) KBPQ (b) PGUV (c) QHVW (d) RIWX
- 40.If SHIP is written as RGHO, how is DOG written in the same code? (a) DOG (b) EPH (c) CNF (d) BME
Answer key
- RGP
- RTM
- DGQF
- SZNA
- SQDD
- KRAP
- NKQP
- DRMW
- DDQS
- GUXP
- XLOW
- KSED
- UBD
- QNBM
- IBOE
- OPPN
- DPME
- KSED
- CPPL
- BZS
- IZRM
- YZOO
- UILT
- RATS
- NIAR
- SYOT
- GLBH
- URHS
- ZCJJ
- EERT
- NOOM
- SZMW
- YZOO
- OKNM
- DGNN
- TAOB
- EFTL
- NLLM
- QHVW
- CNF
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