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 FISH is written as ITJG, how is FROG written in the same code? (a) GORF (b) HPSG (c) GSPH (d) FNQE
- 2.If KITE is written as PRGV, how is COLD written in the same code? (a) DPME (b) XLOW (c) WKNV (d) YMPX
- 3.If STAR is written as RATS, how is BOOK written in the same code? (a) LPPC (b) JNNA (c) CPPL (d) KOOB
- 4.If FISH is written as HKUJ, how is JUMP written in the same code? (a) MXPS (b) HSKN (c) KVNQ (d) LWOR
- 5.If DESK is written as LTFE, how is STAR written in the same code? (a) SBUT (b) QZSR (c) RATS (d) TUBS
- 6.If FROG is written as HTQI, how is LAMP written in the same code? (a) ODPS (b) MBNQ (c) JYKN (d) NCOR
- 7.If GOLD is written as EMPH, how is COLD written in the same code? (a) EMPD (b) DLOC (c) CKNB (d) DPME
- 8.If HAND is written as SZMW, how is STAR written in the same code? (a) TUBS (b) IHAJ (c) HGZI (d) GFYH
- 9.If PEN is written as RGP, how is BELL written in the same code? (a) ZCJJ (b) CFMM (c) DGNN (d) EHOO
- 10.If RAIN is written as IZRM, how is DRUM written in the same code? (a) ESVN (b) WIFN (c) VHEM (d) XJGO
- 11.If BALL is written as DCNN, how is CAT written in the same code? (a) DBU (b) ECV (c) FDW (d) AYR
- 12.If BALL is written as DCNN, how is PEN written in the same code? (a) QFO (b) NCL (c) RGP (d) SHQ
- 13.If CAKE is written as XZPV, how is NEST written in the same code? (a) OFTU (b) LUGF (c) MVHG (d) NWIH
- 14.If MOON is written as NOOM, how is SHIP written in the same code? (a) QJIT (b) TIJQ (c) OHGR (d) PIHS
- 15.If CAT is written as UBD, how is FROG written in the same code? (a) GSPH (b) HPSG (c) FNQE (d) GORF
- 16.If KITE is written as LJUF, how is TOYS written in the same code? (a) VQAU (b) TZPU (c) UPZT (d) SNXR
- 17.If LAMP is written as MBNQ, how is STAR written in the same code? (a) TUBS (b) UVCT (c) SBUT (d) RSZQ
- 18.If CAT is written as XZG, how is NEST written in the same code? (a) LUGF (b) OFTU (c) MVHG (d) NWIH
- 19.If TOYS is written as TZPU, how is BALL written in the same code? (a) CBMM (b) MMBC (c) LLAB (d) KKZA
- 20.If KITE is written as JHSD, how is BALL written in the same code? (a) BALL (b) CBMM (c) ZYJJ (d) AZKK
- 21.If SUN is written as NUS, how is KITE written in the same code? (a) FUJL (b) DSHJ (c) ETIK (d) LJUF
- 22.If TOYS is written as GLBH, how is FROG written in the same code? (a) VJMU (b) UILT (c) THKS (d) GSPH
- 23.If BELL is written as KKDA, how is PEN written in the same code? (a) ODM (b) NEP (c) OFQ (d) MDO
- 24.If HAND is written as JCPF, how is STAR written in the same code? (a) TUBS (b) QRYP (c) UVCT (d) VWDU
- 25.If MOON is written as LNNM, how is LAMP written in the same code? (a) MBNQ (b) LAMP (c) KZLO (d) JYKN
- 26.If STAR is written as RATS, how is WIND written in the same code? (a) CMHV (b) XJOE (c) EOJX (d) DNIW
- 27.If SHIP is written as PIHS, how is STAR written in the same code? (a) SBUT (b) TUBS (c) QZSR (d) RATS
- 28.If TREE is written as EERT, how is DRUM written in the same code? (a) NVSE (b) ESVN (c) MURD (d) LTQC
- 29.If WIND is written as XJOE, how is DOG written in the same code? (a) CNF (b) EPH (c) FQI (d) HPE
- 30.If FROG is written as IQTH, how is DRUM written in the same code? (a) MURD (b) KSPB (c) OWTF (d) FTWO
- 31.If STAR is written as TCVU, how is SUN written in the same code? (a) UWP (b) PWU (c) NUS (d) LSQ
- 32.If DRUM is written as ESVN, how is BELL written in the same code? (a) DGNN (b) MMFC (c) ADKK (d) CFMM
- 33.If PEN is written as NEP, how is BOAT written in the same code? (a) UBPC (b) TAOB (c) CPBU (d) SZNA
- 34.If BELL is written as EHOO, how is MOON written in the same code? (a) QSSR (b) OQQP (c) JLLK (d) PRRQ
- 35.If LAMP is written as QNBM, how is STAR written in the same code? (a) QZSR (b) TUBS (c) SBUT (d) RATS
- 36.If BOOK is written as MQQD, how is HAND written in the same code? (a) DNAH (b) BLYF (c) JCPF (d) FPCJ
- 37.If PARK is written as KRAP, how is GOLD written in the same code? (a) HPME (b) EMPH (c) CKNF (d) DLOG
- 38.If DOG is written as EPH, how is GOLD written in the same code? (a) HPME (b) FNKC (c) EMPH (d) IQNF
- 39.If DRUM is written as CQTL, how is KITE written in the same code? (a) JHSD (b) KITE (c) LJUF (d) IGRC
- 40.If JUMP is written as ROWL, how is HAND written in the same code? (a) JCPF (b) FPCJ (c) DNAH (d) BLYF
Answer key
- HPSG
- XLOW
- KOOB
- LWOR
- SBUT
- NCOR
- EMPD
- HGZI
- DGNN
- WIFN
- ECV
- RGP
- MVHG
- PIHS
- HPSG
- UPZT
- TUBS
- MVHG
- MMBC
- AZKK
- ETIK
- UILT
- MDO
- UVCT
- KZLO
- DNIW
- RATS
- MURD
- EPH
- OWTF
- PWU
- CFMM
- TAOB
- PRRQ
- SBUT
- FPCJ
- DLOG
- HPME
- JHSD
- FPCJ
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