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 FROG is written as GORF, how is TREE written in the same code? (a) DDQS (b) EERT (c) USFF (d) FFSU
- 2.If NEST is written as MVHG, how is RAIN written in the same code? (a) HYQL (b) JASN (c) SBJO (d) IZRM
- 3.If MILK is written as KLIM, how is TREE written in the same code? (a) EERT (b) FFSU (c) DDQS (d) USFF
- 4.If NEST is written as UTFO, how is WIND written in the same code? (a) EOJX (b) DNIW (c) CMHV (d) XJOE
- 5.If NEST is written as VUGP, how is PEN written in the same code? (a) LCN (b) RGP (c) NEP (d) PGR
- 6.If STAR is written as RATS, how is TREE written in the same code? (a) EERT (b) DDQS (c) USFF (d) FFSU
- 7.If FROG is written as HTQI, how is RAIN written in the same code? (a) TCKP (b) UDLQ (c) SBJO (d) PYGL
- 8.If CAKE is written as BZJD, how is JUMP written in the same code? (a) HSKN (b) JUMP (c) ITLO (d) KVNQ
- 9.If NEST is written as TSEN, how is BELL written in the same code? (a) LLEB (b) KKDA (c) MMFC (d) CFMM
- 10.If MOON is written as OPPN, how is TOYS written in the same code? (a) UPZT (b) RXNS (c) TZPU (d) SYOT
- 11.If BALL is written as EDOO, how is COLD written in the same code? (a) GSPH (b) ZLIA (c) FROG (d) EQNF
- 12.If TOYS is written as TZPU, how is COLD written in the same code? (a) EMPD (b) DLOC (c) CKNB (d) DPME
- 13.If DESK is written as JRDC, how is DOG written in the same code? (a) HPE (b) FNC (c) GOD (d) CNF
- 14.If BOOK is written as ANNJ, how is DESK written in the same code? (a) DESK (b) EFTL (c) BCQI (d) CDRJ
- 15.If HAND is written as SZMW, how is DOG written in the same code? (a) XMU (b) EPH (c) VKS (d) WLT
- 16.If NEST is written as MVHG, how is FROG written in the same code? (a) UILT (b) THKS (c) VJMU (d) GSPH
- 17.If NEST is written as TSEN, how is LAMP written in the same code? (a) MBNQ (b) OLZK (c) QNBM (d) PMAL
- 18.If DRUM is written as CQTL, how is BOAT written in the same code? (a) CPBU (b) ANZS (c) BOAT (d) ZMYR
- 19.If TREE is written as GGTV, how is DESK written in the same code? (a) KSED (b) IQCB (c) FGUM (d) MUGF
- 20.If FROG is written as IURJ, how is PEN written in the same code? (a) TIR (b) RGP (c) MBK (d) SHQ
- 21.If BELL is written as ZCJJ, how is JUMP written in the same code? (a) HSKN (b) ITLO (c) GRJM (d) LWOR
- 22.If GOLD is written as FNQI, how is FISH written in the same code? (a) JUKH (b) HSIF (c) HKUJ (d) FQGD
- 23.If TREE is written as WUHH, how is GOLD written in the same code? (a) KSPH (b) DLIA (c) IQNF (d) JROG
- 24.If KITE is written as PRGV, how is TREE written in the same code? (a) USFF (b) FHUU (c) GIVV (d) HJWW
- 25.If FROG is written as GSPH, how is LAMP written in the same code? (a) MBNQ (b) KZLO (c) NCOR (d) QNBM
- 26.If TREE is written as GGTV, how is CAT written in the same code? (a) TAC (b) RYA (c) VCE (d) ECV
- 27.If LION is written as ORLM, how is DESK written in the same code? (a) VUGO (b) XWIQ (c) EFTL (d) WVHP
- 28.If FISH is written as URHS, how is PARK written in the same code? (a) JYHO (b) QBSL (c) KZIP (d) LAJQ
- 29.If BELL is written as CFMM, how is NEST written in the same code? (a) MDRS (b) PGUV (c) UTFO (d) OFTU
- 30.If BELL is written as ZCJJ, how is BOOK written in the same code? (a) DQQM (b) YLLH (c) ZMMI (d) ANNJ
- 31.If MILK is written as NROP, how is SUN written in the same code? (a) GEL (b) HFM (c) IGN (d) TVO
- 32.If STAR is written as UVCT, how is BOAT written in the same code? (a) ZMYR (b) CPBU (c) DQCV (d) ERDW
- 33.If BALL is written as YZOO, how is BOAT written in the same code? (a) CPBU (b) XKYF (c) YLZG (d) ZMAH
- 34.If MOON is written as NOOM, how is BOAT written in the same code? (a) UBPC (b) SZNA (c) TAOB (d) CPBU
- 35.If BOOK is written as DQQM, how is DOG written in the same code? (a) GRJ (b) BME (c) FQI (d) EPH
- 36.If PEN is written as RGP, how is WIND written in the same code? (a) ZLQG (b) UGLB (c) XJOE (d) YKPF
- 37.If FISH is written as ITJG, how is DRUM written in the same code? (a) MURD (b) ESVN (c) LTQC (d) NVSE
- 38.If GOLD is written as TLOW, how is STAR written in the same code? (a) TUBS (b) IHAJ (c) HGZI (d) GFYH
- 39.If DOG is written as HPE, how is FROG written in the same code? (a) GORF (b) GSPH (c) FNQE (d) HPSG
- 40.If PARK is written as NYPI, how is FROG written in the same code? (a) COLD (b) HTQI (c) DPME (d) EQNF
Answer key
- EERT
- IZRM
- EERT
- EOJX
- PGR
- EERT
- TCKP
- ITLO
- LLEB
- TZPU
- FROG
- EMPD
- FNC
- CDRJ
- WLT
- UILT
- PMAL
- ANZS
- MUGF
- SHQ
- HSKN
- JUKH
- JROG
- GIVV
- MBNQ
- VCE
- WVHP
- KZIP
- OFTU
- ZMMI
- HFM
- DQCV
- YLZG
- TAOB
- FQI
- YKPF
- NVSE
- HGZI
- HPSG
- DPME
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