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 CAT is written as DBU, how is NEST written in the same code? (a) MDRS (b) UTFO (c) PGUV (d) OFTU
- 2.If FISH is written as URHS, how is TOYS written in the same code? (a) FKAG (b) HMCI (c) UPZT (d) GLBH
- 3.If DESK is written as MUGF, how is DOG written in the same code? (a) GOD (b) FQI (c) EMB (d) IQF
- 4.If STAR is written as UVCT, how is TREE written in the same code? (a) VTGG (b) USFF (c) RPCC (d) WUHH
- 5.If SUN is written as PWU, how is PEN written in the same code? (a) PGR (b) LCN (c) NEP (d) RGP
- 6.If LAMP is written as OZNK, how is SUN written in the same code? (a) HFM (b) IGN (c) GEL (d) TVO
- 7.If DRUM is written as GUXP, how is DESK written in the same code? (a) FGUM (b) HIWO (c) GHVN (d) ABPH
- 8.If CAKE is written as BZJD, how is WIND written in the same code? (a) UGLB (b) VHMC (c) WIND (d) XJOE
- 9.If KITE is written as ETIK, how is WIND written in the same code? (a) DNIW (b) EOJX (c) CMHV (d) XJOE
- 10.If RAIN is written as NIAR, how is CAKE written in the same code? (a) FLBD (b) DBLF (c) DJZB (d) EKAC
- 11.If DRUM is written as WIFN, how is MILK written in the same code? (a) MQNO (b) NROP (c) OSPQ (d) NJML
- 12.If MILK is written as OKNM, how is WIND written in the same code? (a) XJOE (b) YKPF (c) UGLB (d) ZLQG
- 13.If CAT is written as TAC, how is SHIP written in the same code? (a) OHGR (b) QJIT (c) TIJQ (d) PIHS
- 14.If KITE is written as FUJL, how is LION written in the same code? (a) MJPO (b) MNHK (c) OPJM (d) NOIL
- 15.If TOYS is written as TZPU, how is STAR written in the same code? (a) RATS (b) SBUT (c) TUBS (d) QZSR
- 16.If DOG is written as GOD, how is CAT written in the same code? (a) TAC (b) DBU (c) UBD (d) SZB
- 17.If KITE is written as LJUF, how is CAT written in the same code? (a) BZS (b) ECV (c) DBU (d) UBD
- 18.If RAIN is written as NIAR, how is LAMP written in the same code? (a) OLZK (b) PMAL (c) QNBM (d) MBNQ
- 19.If DESK is written as BCQI, how is PEN written in the same code? (a) MBK (b) RGP (c) NCL (d) ODM
- 20.If TOYS is written as GLBH, how is DESK written in the same code? (a) WVHP (b) XWIQ (c) VUGO (d) EFTL
- 21.If DRUM is written as NVSE, how is TREE written in the same code? (a) EERT (b) DDQS (c) USFF (d) FFSU
- 22.If DRUM is written as MURD, how is KITE written in the same code? (a) LJUF (b) FUJL (c) DSHJ (d) ETIK
- 23.If BELL is written as DGNN, how is MOON written in the same code? (a) PRRQ (b) KMML (c) NPPO (d) OQQP
- 24.If BELL is written as LLEB, how is LAMP written in the same code? (a) OLZK (b) PMAL (c) MBNQ (d) QNBM
- 25.If LION is written as OPJM, how is PEN written in the same code? (a) QFO (b) OFQ (c) MDO (d) NEP
- 26.If SHIP is written as HSRK, how is BOAT written in the same code? (a) ZMAH (b) YLZG (c) CPBU (d) XKYF
- 27.If CAKE is written as FLBD, how is JUMP written in the same code? (a) OLTI (b) KVNQ (c) QNVK (d) PMUJ
- 28.If CAT is written as XZG, how is FISH written in the same code? (a) URHS (b) TQGR (c) VSIT (d) GJTI
- 29.If JUMP is written as QFNK, how is LION written in the same code? (a) PSMN (b) ORLM (c) NQKL (d) MJPO
- 30.If SUN is written as QSL, how is CAT written in the same code? (a) AYR (b) ECV (c) ZXQ (d) BZS
- 31.If PEN is written as NEP, how is KITE written in the same code? (a) FUJL (b) LJUF (c) ETIK (d) DSHJ
- 32.If BOOK is written as KOOB, how is FROG written in the same code? (a) HPSG (b) FNQE (c) GORF (d) GSPH
- 33.If MILK is written as KLIM, how is BOOK written in the same code? (a) JNNA (b) LPPC (c) CPPL (d) KOOB
- 34.If BOOK is written as ANNJ, how is TREE written in the same code? (a) TREE (b) RPCC (c) USFF (d) SQDD
- 35.If SHIP is written as PIHS, how is MILK written in the same code? (a) LMJN (b) JKHL (c) KLIM (d) NJML
- 36.If HAND is written as DNAH, how is FISH written in the same code? (a) GJTI (b) GRHE (c) ITJG (d) HSIF
- 37.If PEN is written as NEP, how is BELL written in the same code? (a) KKDA (b) LLEB (c) CFMM (d) MMFC
- 38.If DRUM is written as GUXP, how is HAND written in the same code? (a) KDQG (b) LERH (c) JCPF (d) EXKA
- 39.If PARK is written as LSBQ, how is KITE written in the same code? (a) DSHJ (b) LJUF (c) ETIK (d) FUJL
- 40.If MILK is written as LHKJ, how is KITE written in the same code? (a) KITE (b) LJUF (c) IGRC (d) JHSD
Answer key
- OFTU
- GLBH
- IQF
- VTGG
- PGR
- HFM
- GHVN
- VHMC
- DNIW
- EKAC
- NROP
- YKPF
- PIHS
- OPJM
- SBUT
- TAC
- DBU
- PMAL
- NCL
- WVHP
- FFSU
- ETIK
- OQQP
- PMAL
- OFQ
- YLZG
- QNVK
- URHS
- ORLM
- AYR
- ETIK
- GORF
- KOOB
- SQDD
- KLIM
- HSIF
- LLEB
- KDQG
- FUJL
- JHSD
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