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 STAR is written as RATS, how is LAMP written in the same code? (a) PMAL (b) MBNQ (c) OLZK (d) QNBM
- 2.If DESK is written as KSED, how is CAT written in the same code? (a) SZB (b) DBU (c) TAC (d) UBD
- 3.If HAND is written as GZMC, how is SHIP written in the same code? (a) RGHO (b) SHIP (c) TIJQ (d) QFGN
- 4.If JUMP is written as ROWL, how is BELL written in the same code? (a) NNGD (b) DGNN (c) LLEB (d) JJCZ
- 5.If NEST is written as LCQR, how is FISH written in the same code? (a) DGQF (b) EHRG (c) CFPE (d) HKUJ
- 6.If BOOK is written as JNNA, how is FROG written in the same code? (a) GORF (b) FNQE (c) EQNF (d) HPSG
- 7.If RAIN is written as IZRM, how is CAT written in the same code? (a) YAH (b) DBU (c) XZG (d) WYF
- 8.If LION is written as KHNM, how is SUN written in the same code? (a) RTM (b) TVO (c) QSL (d) SUN
- 9.If CAKE is written as XZPV, how is FROG written in the same code? (a) UILT (b) GSPH (c) THKS (d) VJMU
- 10.If FISH is written as HSIF, how is SHIP written in the same code? (a) PIHS (b) OHGR (c) TIJQ (d) QJIT
- 11.If TREE is written as FFSU, how is MOON written in the same code? (a) NOOM (b) MNNL (c) NPPO (d) OPPN
- 12.If TOYS is written as VQAU, how is SUN written in the same code? (a) TVO (b) UWP (c) QSL (d) VXQ
- 13.If BOOK is written as KOOB, how is GOLD written in the same code? (a) HPME (b) DLOG (c) EMPH (d) CKNF
- 14.If RAIN is written as PKCT, how is FISH written in the same code? (a) JUKH (b) HKUJ (c) FQGD (d) HSIF
- 15.If NEST is written as QHVW, how is CAKE written in the same code? (a) FDNH (b) ZXHB (c) GEOI (d) ECMG
- 16.If CAT is written as XZG, how is HAND written in the same code? (a) SZMW (b) TANX (c) IBOE (d) RYLV
- 17.If DOG is written as WLT, how is TOYS written in the same code? (a) UPZT (b) FKAG (c) GLBH (d) HMCI
- 18.If CAT is written as XZG, how is CAKE written in the same code? (a) WYOU (b) DBLF (c) YAQW (d) XZPV
- 19.If FROG is written as DPME, how is DOG written in the same code? (a) CNF (b) ALD (c) BME (d) FQI
- 20.If TOYS is written as GLBH, how is KITE written in the same code? (a) QSHW (b) LJUF (c) OQFU (d) PRGV
- 21.If DOG is written as EPH, how is LAMP written in the same code? (a) KZLO (b) MBNQ (c) QNBM (d) NCOR
- 22.If BOOK is written as LPPC, how is BALL written in the same code? (a) CBMM (b) KKZA (c) LLAB (d) MMBC
- 23.If LION is written as OPJM, how is FROG written in the same code? (a) GSPH (b) FNQE (c) HPSG (d) GORF
- 24.If DOG is written as WLT, how is NEST written in the same code? (a) NWIH (b) LUGF (c) OFTU (d) MVHG
- 25.If FROG is written as UILT, how is COLD written in the same code? (a) YMPX (b) DPME (c) WKNV (d) XLOW
- 26.If FISH is written as ITJG, how is TREE written in the same code? (a) USFF (b) DDQS (c) EERT (d) FFSU
- 27.If CAT is written as XZG, how is DESK written in the same code? (a) XWIQ (b) VUGO (c) WVHP (d) EFTL
- 28.If TOYS is written as RXNS, how is DESK written in the same code? (a) JRDC (b) LTFE (c) CDRJ (d) KSED
- 29.If CAKE is written as GMCE, how is FROG written in the same code? (a) IQTH (b) EMPD (c) GORF (d) HTQI
- 30.If CAT is written as AYR, how is DOG written in the same code? (a) ALD (b) FQI (c) CNF (d) BME
- 31.If WIND is written as DNIW, how is BOAT written in the same code? (a) TAOB (b) UBPC (c) SZNA (d) CPBU
- 32.If COLD is written as BNKC, how is PARK written in the same code? (a) PARK (b) NYPI (c) QBSL (d) OZQJ
- 33.If DRUM is written as MURD, how is BELL written in the same code? (a) MMFC (b) KKDA (c) CFMM (d) LLEB
- 34.If NEST is written as MVHG, how is BOOK written in the same code? (a) ZMMQ (b) CPPL (c) XKKO (d) YLLP
- 35.If SUN is written as PWU, how is SHIP written in the same code? (a) UJKR (b) NGFQ (c) PIHS (d) RKJU
- 36.If JUMP is written as MXPS, how is FROG written in the same code? (a) JVSK (b) HTQI (c) IURJ (d) COLD
- 37.If GOLD is written as CKNF, how is RAIN written in the same code? (a) QZHM (b) OJBS (c) NIAR (d) MHZQ
- 38.If PEN is written as KVM, how is DRUM written in the same code? (a) ESVN (b) VHEM (c) XJGO (d) WIFN
- 39.If DRUM is written as MURD, how is SUN written in the same code? (a) OVT (b) TVO (c) NUS (d) MTR
- 40.If HAND is written as JCPF, how is SUN written in the same code? (a) VXQ (b) TVO (c) QSL (d) UWP
Answer key
- PMAL
- TAC
- RGHO
- NNGD
- DGQF
- FNQE
- XZG
- RTM
- UILT
- PIHS
- OPPN
- UWP
- DLOG
- JUKH
- FDNH
- SZMW
- GLBH
- XZPV
- BME
- PRGV
- MBNQ
- MMBC
- HPSG
- MVHG
- XLOW
- FFSU
- WVHP
- JRDC
- IQTH
- BME
- TAOB
- OZQJ
- LLEB
- YLLP
- RKJU
- IURJ
- MHZQ
- WIFN
- NUS
- UWP
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