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 PARK is written as KZIP, how is MOON written in the same code? (a) OMMN (b) MKKL (c) NLLM (d) NPPO
- 2.If CAKE is written as AYIC, how is LION written in the same code? (a) IFLK (b) NKQP (c) JGML (d) KHNM
- 3.If SUN is written as MTR, how is CAKE written in the same code? (a) BZJD (b) FLBD (c) EKAC (d) DJZB
- 4.If FISH is written as HSIF, how is BOOK written in the same code? (a) LPPC (b) JNNA (c) KOOB (d) CPPL
- 5.If BELL is written as LLEB, how is KITE written in the same code? (a) FUJL (b) LJUF (c) DSHJ (d) ETIK
- 6.If MOON is written as LNNM, how is PARK written in the same code? (a) PARK (b) QBSL (c) OZQJ (d) NYPI
- 7.If JUMP is written as QFNK, how is BOOK written in the same code? (a) YLLP (b) XKKO (c) CPPL (d) ZMMQ
- 8.If TREE is written as EERT, how is COLD written in the same code? (a) DPME (b) DLOC (c) EMPD (d) CKNB
- 9.If FROG is written as DPME, how is DESK written in the same code? (a) FGUM (b) CDRJ (c) BCQI (d) ABPH
- 10.If MOON is written as NLLM, how is COLD written in the same code? (a) DPME (b) YMPX (c) WKNV (d) XLOW
- 11.If TREE is written as SQDD, how is TOYS written in the same code? (a) TOYS (b) RMWQ (c) UPZT (d) SNXR
- 12.If GOLD is written as DLOG, how is LAMP written in the same code? (a) QNBM (b) MBNQ (c) PMAL (d) OLZK
- 13.If BOOK is written as YLLP, how is PEN written in the same code? (a) LWN (b) JUL (c) QFO (d) KVM
- 14.If SUN is written as QSL, how is CAKE written in the same code? (a) BZJD (b) AYIC (c) ECMG (d) ZXHB
- 15.If TREE is written as EERT, how is SHIP written in the same code? (a) QJIT (b) TIJQ (c) PIHS (d) OHGR
- 16.If JUMP is written as QFNK, how is DESK written in the same code? (a) XWIQ (b) EFTL (c) WVHP (d) VUGO
- 17.If RAIN is written as OJBS, how is FROG written in the same code? (a) GSPH (b) FNQE (c) GORF (d) HPSG
- 18.If CAKE is written as BZJD, how is BOAT written in the same code? (a) CPBU (b) BOAT (c) ZMYR (d) ANZS
- 19.If PARK is written as KZIP, how is SUN written in the same code? (a) TVO (b) HFM (c) GEL (d) IGN
- 20.If BOOK is written as MQQD, how is JUMP written in the same code? (a) PMUJ (b) NKSH (c) ROWL (d) LWOR
- 21.If SHIP is written as OHGR, how is BOAT written in the same code? (a) UBPC (b) SZNA (c) ANZS (d) TAOB
- 22.If DRUM is written as GUXP, how is TREE written in the same code? (a) VTGG (b) QOBB (c) WUHH (d) XVII
- 23.If BOAT is written as YLZG, how is STAR written in the same code? (a) HGZI (b) GFYH (c) TUBS (d) IHAJ
- 24.If COLD is written as EMPD, how is BOOK written in the same code? (a) JNNA (b) CPPL (c) KOOB (d) LPPC
- 25.If BOAT is written as ANZS, how is JUMP written in the same code? (a) JUMP (b) KVNQ (c) ITLO (d) HSKN
- 26.If HAND is written as EOBI, how is RAIN written in the same code? (a) SBJO (b) NIAR (c) MHZQ (d) OJBS
- 27.If BOOK is written as KOOB, how is JUMP written in the same code? (a) OLTI (b) QNVK (c) KVNQ (d) PMUJ
- 28.If SUN is written as TVO, how is PEN written in the same code? (a) RGP (b) OFQ (c) QFO (d) ODM
- 29.If MILK is written as KLIM, how is MOON written in the same code? (a) OPPN (b) MNNL (c) NPPO (d) NOOM
- 30.If DOG is written as FNC, how is TOYS written in the same code? (a) SYOT (b) SNXR (c) RXNS (d) TZPU
- 31.If CAT is written as SZB, how is STAR written in the same code? (a) RATS (b) RSZQ (c) QZSR (d) SBUT
- 32.If LION is written as NOIL, how is FROG written in the same code? (a) GORF (b) HPSG (c) GSPH (d) FNQE
- 33.If BOAT is written as YLZG, how is COLD written in the same code? (a) WKNV (b) YMPX (c) XLOW (d) DPME
- 34.If PEN is written as NEP, how is COLD written in the same code? (a) DLOC (b) DPME (c) CKNB (d) EMPD
- 35.If WIND is written as UGLB, how is COLD written in the same code? (a) EQNF (b) ZLIA (c) AMJB (d) BNKC
- 36.If CAT is written as BZS, how is DOG written in the same code? (a) EPH (b) DOG (c) BME (d) CNF
- 37.If STAR is written as UVCT, how is BALL written in the same code? (a) ZYJJ (b) DCNN (c) EDOO (d) CBMM
- 38.If LION is written as MNHK, how is LAMP written in the same code? (a) OLZK (b) PMAL (c) QNBM (d) KZLO
- 39.If RAIN is written as IZRM, how is MOON written in the same code? (a) OMMN (b) NPPO (c) NLLM (d) MKKL
- 40.If FISH is written as HSIF, how is STAR written in the same code? (a) SBUT (b) TUBS (c) QZSR (d) RATS
Answer key
- NLLM
- JGML
- DJZB
- KOOB
- ETIK
- OZQJ
- YLLP
- DLOC
- BCQI
- XLOW
- SNXR
- PMAL
- KVM
- AYIC
- PIHS
- WVHP
- HPSG
- ANZS
- HFM
- ROWL
- SZNA
- WUHH
- HGZI
- LPPC
- ITLO
- OJBS
- PMUJ
- QFO
- NOOM
- RXNS
- QZSR
- GORF
- XLOW
- DLOC
- AMJB
- CNF
- DCNN
- OLZK
- NLLM
- RATS
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