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 SUN is written as HFM, how is PARK written in the same code? (a) KZIP (b) LAJQ (c) JYHO (d) QBSL
- 2.If DESK is written as MUGF, how is CAT written in the same code? (a) VCE (b) ECV (c) TAC (d) RYA
- 3.If RAIN is written as NIAR, how is DRUM written in the same code? (a) ESVN (b) NVSE (c) LTQC (d) MURD
- 4.If CAT is written as DBU, how is DOG written in the same code? (a) EPH (b) HPE (c) FQI (d) CNF
- 5.If MILK is written as MNKO, how is KITE written in the same code? (a) MKVG (b) GVKM (c) CRGI (d) ETIK
- 6.If STAR is written as RSZQ, how is MILK written in the same code? (a) KGJI (b) LHKJ (c) NJML (d) MILK
- 7.If COLD is written as XLOW, how is PEN written in the same code? (a) KVM (b) JUL (c) LWN (d) QFO
- 8.If TOYS is written as VQAU, how is MOON written in the same code? (a) NPPO (b) OQQP (c) KMML (d) PRRQ
- 9.If FISH is written as HSIF, how is CAKE written in the same code? (a) EKAC (b) DBLF (c) FLBD (d) DJZB
- 10.If DOG is written as GOD, how is RAIN written in the same code? (a) SBJO (b) NIAR (c) OJBS (d) MHZQ
- 11.If MOON is written as NOOM, how is FROG written in the same code? (a) GORF (b) HPSG (c) GSPH (d) FNQE
- 12.If KITE is written as PRGV, how is WIND written in the same code? (a) CQLV (b) XJOE (c) ESNX (d) DRMW
- 13.If CAT is written as XZG, how is MILK written in the same code? (a) OSPQ (b) NROP (c) MQNO (d) NJML
- 14.If DRUM is written as OWTF, how is SUN written in the same code? (a) UWP (b) PWU (c) NUS (d) LSQ
- 15.If CAKE is written as DBLF, how is MOON written in the same code? (a) LNNM (b) OPPN (c) NPPO (d) OQQP
- 16.If KITE is written as ETIK, how is DRUM written in the same code? (a) NVSE (b) LTQC (c) MURD (d) ESVN
- 17.If CAT is written as TAC, how is FISH written in the same code? (a) ITJG (b) GJTI (c) HSIF (d) GRHE
- 18.If FISH is written as URHS, how is SUN written in the same code? (a) IGN (b) TVO (c) GEL (d) HFM
- 19.If BELL is written as YVOO, how is DOG written in the same code? (a) EPH (b) WLT (c) VKS (d) XMU
- 20.If BALL is written as LLAB, how is TOYS written in the same code? (a) RXNS (b) SYOT (c) TZPU (d) UPZT
- 21.If NEST is written as UTFO, how is RAIN written in the same code? (a) OJBS (b) NIAR (c) SBJO (d) MHZQ
- 22.If DRUM is written as MURD, how is SUN written in the same code? (a) TVO (b) MTR (c) NUS (d) OVT
- 23.If TREE is written as EERT, how is DOG written in the same code? (a) HPE (b) EPH (c) FNC (d) GOD
- 24.If GOLD is written as TLOW, how is SHIP written in the same code? (a) GRQJ (b) TIJQ (c) ITSL (d) HSRK
- 25.If DOG is written as EPH, how is NEST written in the same code? (a) PGUV (b) MDRS (c) UTFO (d) OFTU
- 26.If KITE is written as PRGV, how is DOG written in the same code? (a) VKS (b) WLT (c) XMU (d) EPH
- 27.If PEN is written as KVM, how is CAT written in the same code? (a) WYF (b) YAH (c) DBU (d) XZG
- 28.If DOG is written as GOD, how is CAKE written in the same code? (a) DBLF (b) DJZB (c) FLBD (d) EKAC
- 29.If DRUM is written as MURD, how is PEN written in the same code? (a) MDO (b) OFQ (c) QFO (d) NEP
- 30.If DESK is written as FGUM, how is MILK written in the same code? (a) NJML (b) KGJI (c) OKNM (d) PLON
- 31.If NEST is written as VUGP, how is LION written in the same code? (a) NKQP (b) PQKN (c) LMGJ (d) NOIL
- 32.If SUN is written as NUS, how is DESK written in the same code? (a) JRDC (b) EFTL (c) LTFE (d) KSED
- 33.If MOON is written as KMML, how is SUN written in the same code? (a) PRK (b) QSL (c) UWP (d) RTM
- 34.If TREE is written as DDQS, how is DOG written in the same code? (a) GOD (b) CNF (c) HPE (d) FNC
- 35.If DRUM is written as LTQC, how is CAT written in the same code? (a) TAC (b) UBD (c) SZB (d) BZS
- 36.If SUN is written as NUS, how is TREE written in the same code? (a) USFF (b) DDQS (c) EERT (d) FFSU
- 37.If PEN is written as ODM, how is COLD written in the same code? (a) AMJB (b) COLD (c) BNKC (d) DPME
- 38.If DESK is written as BCQI, how is BOOK written in the same code? (a) YLLH (b) ANNJ (c) ZMMI (d) DQQM
- 39.If CAT is written as UBD, how is KITE written in the same code? (a) ETIK (b) FUJL (c) LJUF (d) DSHJ
- 40.If PEN is written as OFQ, how is DESK written in the same code? (a) JRDC (b) LTFE (c) KSED (d) EFTL
Answer key
- KZIP
- VCE
- MURD
- EPH
- GVKM
- LHKJ
- KVM
- OQQP
- EKAC
- NIAR
- GORF
- DRMW
- NROP
- PWU
- NPPO
- MURD
- HSIF
- HFM
- WLT
- SYOT
- OJBS
- NUS
- GOD
- HSRK
- OFTU
- WLT
- XZG
- EKAC
- NEP
- OKNM
- PQKN
- KSED
- QSL
- FNC
- SZB
- EERT
- BNKC
- ZMMI
- FUJL
- LTFE
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