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 TREE is written as GIVV, how is STAR written in the same code? (a) TUBS (b) HGZI (c) GFYH (d) IHAJ
- 2.If DESK is written as KSED, how is GOLD written in the same code? (a) HPME (b) CKNF (c) EMPH (d) DLOG
- 3.If MOON is written as NOOM, how is SUN written in the same code? (a) MTR (b) OVT (c) NUS (d) TVO
- 4.If BOOK is written as KOOB, how is MILK written in the same code? (a) NJML (b) KLIM (c) LMJN (d) JKHL
- 5.If BELL is written as LLEB, how is KITE written in the same code? (a) LJUF (b) DSHJ (c) FUJL (d) ETIK
- 6.If GOLD is written as DLOG, how is CAT written in the same code? (a) UBD (b) SZB (c) TAC (d) DBU
- 7.If TREE is written as EERT, how is MOON written in the same code? (a) OPPN (b) NPPO (c) MNNL (d) NOOM
- 8.If MILK is written as NROP, how is BOAT written in the same code? (a) CPBU (b) ZMAH (c) YLZG (d) XKYF
- 9.If PEN is written as NCL, how is CAT written in the same code? (a) AYR (b) ZXQ (c) BZS (d) ECV
- 10.If SUN is written as HFM, how is MILK written in the same code? (a) MQNO (b) NROP (c) NJML (d) OSPQ
- 11.If BOOK is written as DQQM, how is CAKE written in the same code? (a) FDNH (b) AYIC (c) DBLF (d) ECMG
- 12.If STAR is written as TCVU, how is SHIP written in the same code? (a) NGFQ (b) PIHS (c) UJKR (d) RKJU
- 13.If CAKE is written as XZPV, how is WIND written in the same code? (a) XJOE (b) ESNX (c) CQLV (d) DRMW
- 14.If PEN is written as NEP, how is KITE written in the same code? (a) FUJL (b) ETIK (c) DSHJ (d) LJUF
- 15.If WIND is written as ZLQG, how is KITE written in the same code? (a) NLWH (b) HFQB (c) OMXI (d) MKVG
- 16.If CAKE is written as EKAC, how is COLD written in the same code? (a) EMPD (b) DPME (c) DLOC (d) CKNB
- 17.If TOYS is written as TZPU, how is PEN written in the same code? (a) MDO (b) QFO (c) OFQ (d) NEP
- 18.If MILK is written as KLIM, how is CAKE written in the same code? (a) DBLF (b) EKAC (c) DJZB (d) FLBD
- 19.If FISH is written as GJTI, how is HAND written in the same code? (a) EOBI (b) GZMC (c) IBOE (d) JCPF
- 20.If FISH is written as URHS, how is JUMP written in the same code? (a) KVNQ (b) RGOL (c) QFNK (d) PEMJ
- 21.If DOG is written as HPE, how is STAR written in the same code? (a) TUBS (b) RATS (c) SBUT (d) QZSR
- 22.If CAT is written as TAC, how is FISH written in the same code? (a) ITJG (b) GJTI (c) GRHE (d) HSIF
- 23.If DESK is written as FGUM, how is MOON written in the same code? (a) PRRQ (b) NPPO (c) OQQP (d) KMML
- 24.If MOON is written as PQQO, how is CAKE written in the same code? (a) ECMG (b) CIYA (c) GMCE (d) EKAC
- 25.If SUN is written as TVO, how is PARK written in the same code? (a) QBSL (b) OZQJ (c) RCTM (d) LSBQ
- 26.If STAR is written as QZSR, how is WIND written in the same code? (a) DNIW (b) VHMC (c) EOJX (d) CMHV
- 27.If STAR is written as SBUT, how is FROG written in the same code? (a) HPSG (b) GORF (c) GSPH (d) FNQE
- 28.If FROG is written as GSPH, how is DOG written in the same code? (a) HPE (b) FQI (c) EPH (d) CNF
- 29.If SUN is written as OVT, how is TREE written in the same code? (a) DDQS (b) USFF (c) FFSU (d) EERT
- 30.If PARK is written as KRAP, how is LION written in the same code? (a) MNHK (b) NOIL (c) OPJM (d) MJPO
- 31.If KITE is written as PRGV, how is BOOK written in the same code? (a) ZMMQ (b) CPPL (c) XKKO (d) YLLP
- 32.If WIND is written as DNIW, how is STAR written in the same code? (a) RATS (b) QZSR (c) TUBS (d) SBUT
- 33.If PARK is written as NYPI, how is COLD written in the same code? (a) EQNF (b) ZLIA (c) AMJB (d) BNKC
- 34.If MILK is written as NJML, how is FISH written in the same code? (a) EHRG (b) ITJG (c) HKUJ (d) GJTI
- 35.If PEN is written as NEP, how is FISH written in the same code? (a) GRHE (b) ITJG (c) HSIF (d) GJTI
- 36.If CAKE is written as DBLF, how is SHIP written in the same code? (a) RGHO (b) QJIT (c) UJKR (d) TIJQ
- 37.If KITE is written as PRGV, how is MILK written in the same code? (a) NJML (b) NROP (c) MQNO (d) OSPQ
- 38.If WIND is written as CMHV, how is CAT written in the same code? (a) UBD (b) BZS (c) TAC (d) SZB
- 39.If TREE is written as USFF, how is DRUM written in the same code? (a) CQTL (b) FTWO (c) NVSE (d) ESVN
- 40.If PEN is written as KVM, how is LION written in the same code? (a) PSMN (b) MJPO (c) ORLM (d) NQKL
Answer key
- HGZI
- DLOG
- NUS
- KLIM
- ETIK
- TAC
- NOOM
- YLZG
- AYR
- NROP
- ECMG
- RKJU
- DRMW
- ETIK
- NLWH
- DLOC
- OFQ
- EKAC
- IBOE
- QFNK
- SBUT
- HSIF
- OQQP
- GMCE
- QBSL
- CMHV
- HPSG
- EPH
- FFSU
- NOIL
- YLLP
- RATS
- AMJB
- GJTI
- HSIF
- TIJQ
- NROP
- SZB
- ESVN
- ORLM
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