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 KLIM, how is BELL written in the same code? (a) CFMM (b) KKDA (c) MMFC (d) LLEB
- 2.If CAKE is written as DJZB, how is LION written in the same code? (a) NOIL (b) MNHK (c) KHNM (d) OPJM
- 3.If RAIN is written as PYGL, how is CAKE written in the same code? (a) BZJD (b) ZXHB (c) ECMG (d) AYIC
- 4.If HAND is written as JCPF, how is FISH written in the same code? (a) DGQF (b) HKUJ (c) GJTI (d) ILVK
- 5.If NEST is written as MVHG, how is PARK written in the same code? (a) QBSL (b) LAJQ (c) KZIP (d) JYHO
- 6.If DRUM is written as BPSK, how is BOAT written in the same code? (a) ANZS (b) ZMYR (c) YLXQ (d) DQCV
- 7.If SHIP is written as HSRK, how is DRUM written in the same code? (a) ESVN (b) XJGO (c) VHEM (d) WIFN
- 8.If KITE is written as GVKM, how is DRUM written in the same code? (a) OWTF (b) FTWO (c) KSPB (d) MURD
- 9.If GOLD is written as HPME, how is FISH written in the same code? (a) GJTI (b) HKUJ (c) ITJG (d) EHRG
- 10.If DOG is written as WLT, how is BOOK written in the same code? (a) YLLP (b) XKKO (c) ZMMQ (d) CPPL
- 11.If JUMP is written as QNVK, how is MOON written in the same code? (a) MNNL (b) NPPO (c) OPPN (d) NOOM
- 12.If MILK is written as KGJI, how is SUN written in the same code? (a) QSL (b) RTM (c) PRK (d) UWP
- 13.If TREE is written as FFSU, how is BALL written in the same code? (a) CBMM (b) MMBC (c) KKZA (d) LLAB
- 14.If LION is written as KHNM, how is BOOK written in the same code? (a) BOOK (b) ZMMI (c) ANNJ (d) CPPL
- 15.If WIND is written as YKPF, how is COLD written in the same code? (a) EQNF (b) AMJB (c) FROG (d) DPME
- 16.If CAKE is written as XZPV, how is LAMP written in the same code? (a) PAOL (b) OZNK (c) NYMJ (d) MBNQ
- 17.If DESK is written as WVHP, how is HAND written in the same code? (a) SZMW (b) RYLV (c) IBOE (d) TANX
- 18.If LAMP is written as KZLO, how is NEST written in the same code? (a) NEST (b) OFTU (c) LCQR (d) MDRS
- 19.If GOLD is written as EMJB, how is SUN written in the same code? (a) QSL (b) RTM (c) PRK (d) UWP
- 20.If MILK is written as MNKO, how is SUN written in the same code? (a) UWP (b) LSQ (c) PWU (d) NUS
- 21.If BOOK is written as KOOB, how is RAIN written in the same code? (a) SBJO (b) NIAR (c) OJBS (d) MHZQ
- 22.If BOOK is written as ZMMI, how is BOAT written in the same code? (a) ANZS (b) YLXQ (c) ZMYR (d) DQCV
- 23.If BELL is written as NNGD, how is CAKE written in the same code? (a) CIYA (b) GMCE (c) ECMG (d) EKAC
- 24.If HAND is written as DNAH, how is BOOK written in the same code? (a) CPPL (b) JNNA (c) KOOB (d) LPPC
- 25.If SHIP is written as PIHS, how is LION written in the same code? (a) OPJM (b) NOIL (c) MJPO (d) MNHK
- 26.If STAR is written as QZSR, how is FROG written in the same code? (a) GORF (b) FNQE (c) EQNF (d) HPSG
- 27.If TREE is written as GIVV, how is LION written in the same code? (a) MJPO (b) PSMN (c) NQKL (d) ORLM
- 28.If JUMP is written as PMUJ, how is BOOK written in the same code? (a) CPPL (b) LPPC (c) JNNA (d) KOOB
- 29.If FROG is written as HPSG, how is BELL written in the same code? (a) CFMM (b) LLEB (c) KKDA (d) MMFC
- 30.If FISH is written as GRHE, how is TREE written in the same code? (a) SQDD (b) DDQS (c) FFSU (d) EERT
- 31.If SUN is written as NUS, how is CAT written in the same code? (a) TAC (b) DBU (c) UBD (d) SZB
- 32.If TREE is written as SQDD, how is SUN written in the same code? (a) QSL (b) SUN (c) RTM (d) TVO
- 33.If FROG is written as UILT, how is MOON written in the same code? (a) NLLM (b) OMMN (c) NPPO (d) MKKL
- 34.If TOYS is written as SYOT, how is LION written in the same code? (a) NOIL (b) MNHK (c) MJPO (d) OPJM
- 35.If GOLD is written as TLOW, how is BALL written in the same code? (a) XYNN (b) CBMM (c) ZAPP (d) YZOO
- 36.If LAMP is written as OZNK, how is TREE written in the same code? (a) HJWW (b) USFF (c) GIVV (d) FHUU
- 37.If LAMP is written as PMAL, how is STAR written in the same code? (a) SBUT (b) QZSR (c) TUBS (d) RATS
- 38.If BALL is written as YZOO, how is STAR written in the same code? (a) TUBS (b) GFYH (c) IHAJ (d) HGZI
- 39.If FISH is written as ILVK, how is TOYS written in the same code? (a) VQAU (b) XSCW (c) QLVP (d) WRBV
- 40.If STAR is written as HGZI, how is FROG written in the same code? (a) VJMU (b) THKS (c) GSPH (d) UILT
Answer key
- LLEB
- MNHK
- AYIC
- HKUJ
- KZIP
- ZMYR
- WIFN
- OWTF
- GJTI
- YLLP
- OPPN
- QSL
- MMBC
- ANNJ
- EQNF
- OZNK
- SZMW
- MDRS
- QSL
- PWU
- NIAR
- ZMYR
- GMCE
- KOOB
- NOIL
- FNQE
- ORLM
- KOOB
- MMFC
- DDQS
- TAC
- RTM
- NLLM
- NOIL
- YZOO
- GIVV
- RATS
- HGZI
- WRBV
- UILT
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