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 BELL is written as YVOO, how is DRUM written in the same code? (a) XJGO (b) VHEM (c) ESVN (d) WIFN
- 2.If FISH is written as URHS, how is WIND written in the same code? (a) CQLV (b) XJOE (c) ESNX (d) DRMW
- 3.If GOLD is written as EMJB, how is STAR written in the same code? (a) UVCT (b) RSZQ (c) QRYP (d) PQXO
- 4.If CAT is written as AYR, how is RAIN written in the same code? (a) TCKP (b) PYGL (c) QZHM (d) OXFK
- 5.If CAKE is written as EKAC, how is TREE written in the same code? (a) USFF (b) EERT (c) DDQS (d) FFSU
- 6.If FROG is written as GORF, how is FISH written in the same code? (a) GJTI (b) HSIF (c) ITJG (d) GRHE
- 7.If RAIN is written as PYGL, how is STAR written in the same code? (a) RSZQ (b) PQXO (c) QRYP (d) UVCT
- 8.If NEST is written as MVHG, how is BOAT written in the same code? (a) XKYF (b) ZMAH (c) CPBU (d) YLZG
- 9.If BOAT is written as TAOB, how is FISH written in the same code? (a) GRHE (b) ITJG (c) HSIF (d) GJTI
- 10.If JUMP is written as MXPS, how is TREE written in the same code? (a) VTGG (b) WUHH (c) QOBB (d) XVII
- 11.If CAT is written as TAC, how is LION written in the same code? (a) MNHK (b) NOIL (c) MJPO (d) OPJM
- 12.If DOG is written as WLT, how is RAIN written in the same code? (a) SBJO (b) JASN (c) HYQL (d) IZRM
- 13.If DOG is written as WLT, how is KITE written in the same code? (a) OQFU (b) PRGV (c) LJUF (d) QSHW
- 14.If CAT is written as ECV, how is KITE written in the same code? (a) MKVG (b) LJUF (c) NLWH (d) IGRC
- 15.If NEST is written as MVHG, how is DRUM written in the same code? (a) VHEM (b) WIFN (c) XJGO (d) ESVN
- 16.If KITE is written as MKVG, how is FROG written in the same code? (a) GSPH (b) IURJ (c) HTQI (d) DPME
- 17.If LION is written as PQKN, how is BOOK written in the same code? (a) KOOB (b) IMMZ (c) DQQM (d) MQQD
- 18.If TREE is written as RPCC, how is DESK written in the same code? (a) ABPH (b) FGUM (c) CDRJ (d) BCQI
- 19.If JUMP is written as PMUJ, how is MOON written in the same code? (a) NOOM (b) NPPO (c) MNNL (d) OPPN
- 20.If DOG is written as FQI, how is DESK written in the same code? (a) GHVN (b) BCQI (c) EFTL (d) FGUM
- 21.If GOLD is written as JROG, how is PARK written in the same code? (a) SDUN (b) MXOH (c) TEVO (d) RCTM
- 22.If BALL is written as CBMM, how is BOOK written in the same code? (a) LPPC (b) ANNJ (c) CPPL (d) DQQM
- 23.If LAMP is written as OLZK, how is MOON written in the same code? (a) MNNL (b) OPPN (c) LNNM (d) NOOM
- 24.If FROG is written as UILT, how is BOAT written in the same code? (a) XKYF (b) YLZG (c) CPBU (d) ZMAH
- 25.If CAT is written as TAC, how is TOYS written in the same code? (a) RXNS (b) UPZT (c) TZPU (d) SYOT
- 26.If DESK is written as WVHP, how is RAIN written in the same code? (a) IZRM (b) HYQL (c) JASN (d) SBJO
- 27.If FROG is written as HPSG, how is BALL written in the same code? (a) CBMM (b) MMBC (c) KKZA (d) LLAB
- 28.If SUN is written as HFM, how is JUMP written in the same code? (a) KVNQ (b) PEMJ (c) QFNK (d) RGOL
- 29.If MILK is written as LMJN, how is CAKE written in the same code? (a) FLBD (b) DBLF (c) DJZB (d) EKAC
- 30.If STAR is written as VWDU, how is DESK written in the same code? (a) HIWO (b) ABPH (c) FGUM (d) GHVN
- 31.If FISH is written as URHS, how is MILK written in the same code? (a) MQNO (b) OSPQ (c) NROP (d) NJML
- 32.If TOYS is written as TZPU, how is CAT written in the same code? (a) UBD (b) SZB (c) DBU (d) TAC
- 33.If MOON is written as OPPN, how is HAND written in the same code? (a) IBOE (b) CMZG (c) DNAH (d) EOBI
- 34.If DOG is written as GOD, how is DRUM written in the same code? (a) NVSE (b) ESVN (c) LTQC (d) MURD
- 35.If WIND is written as DNIW, how is BELL written in the same code? (a) KKDA (b) MMFC (c) CFMM (d) LLEB
- 36.If FISH is written as URHS, how is BALL written in the same code? (a) ZAPP (b) YZOO (c) CBMM (d) XYNN
- 37.If PEN is written as NEP, how is BOOK written in the same code? (a) LPPC (b) JNNA (c) KOOB (d) CPPL
- 38.If DRUM is written as MURD, how is BELL written in the same code? (a) CFMM (b) KKDA (c) MMFC (d) LLEB
- 39.If LAMP is written as OZNK, how is FROG written in the same code? (a) VJMU (b) THKS (c) GSPH (d) UILT
- 40.If MILK is written as KGJI, how is CAT written in the same code? (a) ZXQ (b) BZS (c) ECV (d) AYR
Answer key
- WIFN
- DRMW
- QRYP
- PYGL
- EERT
- HSIF
- QRYP
- YLZG
- HSIF
- WUHH
- NOIL
- IZRM
- PRGV
- MKVG
- WIFN
- HTQI
- MQQD
- BCQI
- NOOM
- FGUM
- SDUN
- CPPL
- MNNL
- YLZG
- SYOT
- IZRM
- MMBC
- QFNK
- FLBD
- GHVN
- NROP
- UBD
- EOBI
- MURD
- LLEB
- YZOO
- KOOB
- LLEB
- UILT
- AYR
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