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 RAIN is written as NIAR, how is BOOK written in the same code? (a) JNNA (b) LPPC (c) KOOB (d) CPPL
- 2.If BELL is written as CFMM, how is LAMP written in the same code? (a) MBNQ (b) NCOR (c) QNBM (d) KZLO
- 3.If KITE is written as JHSD, how is BALL written in the same code? (a) CBMM (b) ZYJJ (c) AZKK (d) BALL
- 4.If BALL is written as MMBC, how is HAND written in the same code? (a) DNAH (b) EOBI (c) IBOE (d) CMZG
- 5.If COLD is written as XLOW, how is TREE written in the same code? (a) FHUU (b) HJWW (c) USFF (d) GIVV
- 6.If SHIP is written as HSRK, how is FISH written in the same code? (a) VSIT (b) URHS (c) TQGR (d) GJTI
- 7.If CAT is written as SZB, how is MOON written in the same code? (a) NOOM (b) LNNM (c) OPPN (d) MNNL
- 8.If LION is written as KHNM, how is PARK written in the same code? (a) OZQJ (b) PARK (c) QBSL (d) NYPI
- 9.If STAR is written as RATS, how is MOON written in the same code? (a) MNNL (b) OPPN (c) NOOM (d) NPPO
- 10.If DESK is written as BCQI, how is SUN written in the same code? (a) UWP (b) QSL (c) PRK (d) RTM
- 11.If SUN is written as VXQ, how is CAT written in the same code? (a) ZXQ (b) ECV (c) GEX (d) FDW
- 12.If DOG is written as HPE, how is DRUM written in the same code? (a) NVSE (b) LTQC (c) ESVN (d) MURD
- 13.If DRUM is written as BPSK, how is TREE written in the same code? (a) SQDD (b) QOBB (c) RPCC (d) VTGG
- 14.If TREE is written as EERT, how is COLD written in the same code? (a) EMPD (b) CKNB (c) DPME (d) DLOC
- 15.If PARK is written as NYPI, how is SHIP written in the same code? (a) RGHO (b) UJKR (c) QFGN (d) PEFM
- 16.If BOAT is written as TAOB, how is BELL written in the same code? (a) LLEB (b) MMFC (c) CFMM (d) KKDA
- 17.If CAT is written as ECV, how is SHIP written in the same code? (a) VKLS (b) UJKR (c) QFGN (d) TIJQ
- 18.If HAND is written as DNAH, how is NEST written in the same code? (a) SRDM (b) TSEN (c) OFTU (d) UTFO
- 19.If JUMP is written as QFNK, how is PEN written in the same code? (a) LWN (b) KVM (c) QFO (d) JUL
- 20.If CAT is written as DBU, how is TREE written in the same code? (a) USFF (b) SQDD (c) VTGG (d) FFSU
- 21.If DOG is written as WLT, how is FISH written in the same code? (a) VSIT (b) URHS (c) GJTI (d) TQGR
- 22.If SHIP is written as PIHS, how is DESK written in the same code? (a) LTFE (b) KSED (c) JRDC (d) EFTL
- 23.If COLD is written as XLOW, how is BALL written in the same code? (a) XYNN (b) CBMM (c) YZOO (d) ZAPP
- 24.If CAT is written as VCE, how is PEN written in the same code? (a) NEP (b) LCN (c) RGP (d) PGR
- 25.If DOG is written as FNC, how is MOON written in the same code? (a) MNNL (b) LNNM (c) OPPN (d) NOOM
- 26.If NEST is written as SRDM, how is JUMP written in the same code? (a) PMUJ (b) ITLO (c) QNVK (d) OLTI
- 27.If DESK is written as EFTL, how is CAKE written in the same code? (a) ECMG (b) BZJD (c) FLBD (d) DBLF
- 28.If PARK is written as KZIP, how is SUN written in the same code? (a) HFM (b) TVO (c) GEL (d) IGN
- 29.If JUMP is written as HSKN, how is CAT written in the same code? (a) AYR (b) BZS (c) ZXQ (d) ECV
- 30.If DOG is written as GOD, how is BELL written in the same code? (a) LLEB (b) CFMM (c) MMFC (d) KKDA
- 31.If LION is written as ORLM, how is MILK written in the same code? (a) OSPQ (b) MQNO (c) NROP (d) NJML
- 32.If NEST is written as MVHG, how is TOYS written in the same code? (a) FKAG (b) UPZT (c) GLBH (d) HMCI
- 33.If GOLD is written as DLOG, how is RAIN written in the same code? (a) MHZQ (b) SBJO (c) NIAR (d) OJBS
- 34.If WIND is written as EOJX, how is GOLD written in the same code? (a) HPME (b) EMPH (c) DLOG (d) CKNF
- 35.If LAMP is written as OLZK, how is SUN written in the same code? (a) OVT (b) MTR (c) RTM (d) NUS
- 36.If BELL is written as KKDA, how is WIND written in the same code? (a) DNIW (b) CMHV (c) VHMC (d) EOJX
- 37.If HAND is written as IBOE, how is BELL written in the same code? (a) ADKK (b) MMFC (c) DGNN (d) CFMM
- 38.If FROG is written as IQTH, how is BALL written in the same code? (a) DCNN (b) JJYZ (c) LLAB (d) NNCD
- 39.If SUN is written as HFM, how is LAMP written in the same code? (a) NYMJ (b) MBNQ (c) OZNK (d) PAOL
- 40.If BALL is written as LLAB, how is HAND written in the same code? (a) EOBI (b) IBOE (c) DNAH (d) CMZG
Answer key
- KOOB
- MBNQ
- AZKK
- EOBI
- GIVV
- URHS
- MNNL
- OZQJ
- NOOM
- QSL
- FDW
- NVSE
- RPCC
- DLOC
- QFGN
- LLEB
- UJKR
- TSEN
- KVM
- USFF
- URHS
- KSED
- YZOO
- PGR
- MNNL
- OLTI
- DBLF
- HFM
- AYR
- LLEB
- NROP
- GLBH
- NIAR
- EMPH
- MTR
- CMHV
- CFMM
- NNCD
- OZNK
- DNAH
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