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 BOOK is written as KOOB, how is COLD written in the same code? (a) CKNB (b) EMPD (c) DPME (d) DLOC
- 2.If NEST is written as SRDM, how is KITE written in the same code? (a) DSHJ (b) FUJL (c) JHSD (d) ETIK
- 3.If HAND is written as EOBI, how is FISH written in the same code? (a) GRHE (b) HSIF (c) GJTI (d) ITJG
- 4.If COLD is written as XLOW, how is SUN written in the same code? (a) IGN (b) GEL (c) TVO (d) HFM
- 5.If FROG is written as IURJ, how is FISH written in the same code? (a) ILVK (b) HKUJ (c) CFPE (d) JMWL
- 6.If BALL is written as EDOO, how is LION written in the same code? (a) OLRQ (b) NKQP (c) IFLK (d) PMSR
- 7.If WIND is written as DNIW, how is FISH written in the same code? (a) GRHE (b) GJTI (c) HSIF (d) ITJG
- 8.If COLD is written as XLOW, how is BOOK written in the same code? (a) XKKO (b) ZMMQ (c) CPPL (d) YLLP
- 9.If BELL is written as NNGD, how is TOYS written in the same code? (a) UAQV (b) QWMR (c) VQAU (d) SYOT
- 10.If MOON is written as NPPO, how is FROG written in the same code? (a) HTQI (b) EQNF (c) HPSG (d) GSPH
- 11.If TOYS is written as SNXR, how is TREE written in the same code? (a) TREE (b) RPCC (c) USFF (d) SQDD
- 12.If DOG is written as WLT, how is DRUM written in the same code? (a) VHEM (b) ESVN (c) WIFN (d) XJGO
- 13.If TOYS is written as SYOT, how is TREE written in the same code? (a) EERT (b) DDQS (c) USFF (d) FFSU
- 14.If FROG is written as GSPH, how is COLD written in the same code? (a) DPME (b) EQNF (c) BNKC (d) EMPD
- 15.If PEN is written as NEP, how is CAKE written in the same code? (a) FLBD (b) DJZB (c) EKAC (d) DBLF
- 16.If BOOK is written as MQQD, how is WIND written in the same code? (a) YKPF (b) FPKY (c) DNIW (d) BLGU
- 17.If FROG is written as GORF, how is RAIN written in the same code? (a) OJBS (b) NIAR (c) MHZQ (d) SBJO
- 18.If PEN is written as NEP, how is FROG written in the same code? (a) GORF (b) GSPH (c) HPSG (d) FNQE
- 19.If FISH is written as HSIF, how is GOLD written in the same code? (a) CKNF (b) HPME (c) EMPH (d) DLOG
- 20.If STAR is written as QRYP, how is MOON written in the same code? (a) JLLK (b) LNNM (c) KMML (d) OQQP
- 21.If LION is written as NOIL, how is CAT written in the same code? (a) UBD (b) TAC (c) DBU (d) SZB
- 22.If STAR is written as SBUT, how is TREE written in the same code? (a) DDQS (b) EERT (c) USFF (d) FFSU
- 23.If KITE is written as PRGV, how is COLD written in the same code? (a) DPME (b) XLOW (c) YMPX (d) WKNV
- 24.If BOAT is written as TAOB, how is FISH written in the same code? (a) GJTI (b) ITJG (c) GRHE (d) HSIF
- 25.If GOLD is written as TLOW, how is TOYS written in the same code? (a) GLBH (b) FKAG (c) UPZT (d) HMCI
- 26.If KITE is written as PRGV, how is DRUM written in the same code? (a) ESVN (b) VHEM (c) XJGO (d) WIFN
- 27.If LAMP is written as OLZK, how is BOAT written in the same code? (a) SZNA (b) UBPC (c) TAOB (d) ANZS
- 28.If GOLD is written as HPME, how is BELL written in the same code? (a) DGNN (b) ADKK (c) MMFC (d) CFMM
- 29.If PARK is written as QBSL, how is MOON written in the same code? (a) NPPO (b) OPPN (c) OQQP (d) LNNM
- 30.If LAMP is written as PMAL, how is RAIN written in the same code? (a) MHZQ (b) SBJO (c) OJBS (d) NIAR
- 31.If GOLD is written as DLOG, how is TOYS written in the same code? (a) SYOT (b) RXNS (c) TZPU (d) UPZT
- 32.If RAIN is written as PKCT, how is BOOK written in the same code? (a) DQQM (b) MQQD (c) IMMZ (d) KOOB
- 33.If CAT is written as TAC, how is NEST written in the same code? (a) OFTU (b) TSEN (c) SRDM (d) UTFO
- 34.If DRUM is written as NVSE, how is HAND written in the same code? (a) DNAH (b) CMZG (c) IBOE (d) EOBI
- 35.If FISH is written as URHS, how is MOON written in the same code? (a) NPPO (b) NLLM (c) MKKL (d) OMMN
- 36.If BOAT is written as YLZG, how is TOYS written in the same code? (a) UPZT (b) FKAG (c) GLBH (d) HMCI
- 37.If CAT is written as XZG, how is LION written in the same code? (a) NQKL (b) PSMN (c) ORLM (d) MJPO
- 38.If BALL is written as YZOO, how is RAIN written in the same code? (a) IZRM (b) JASN (c) HYQL (d) SBJO
- 39.If NEST is written as TSEN, how is KITE written in the same code? (a) ETIK (b) DSHJ (c) FUJL (d) LJUF
- 40.If PARK is written as SDUN, how is CAKE written in the same code? (a) ZXHB (b) FDNH (c) GEOI (d) ECMG
Answer key
- DLOC
- DSHJ
- ITJG
- HFM
- ILVK
- OLRQ
- HSIF
- YLLP
- UAQV
- GSPH
- SQDD
- WIFN
- EERT
- DPME
- EKAC
- FPKY
- NIAR
- GORF
- DLOG
- KMML
- TAC
- FFSU
- XLOW
- HSIF
- GLBH
- WIFN
- SZNA
- CFMM
- NPPO
- NIAR
- SYOT
- MQQD
- TSEN
- EOBI
- NLLM
- GLBH
- ORLM
- IZRM
- ETIK
- FDNH
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