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 NUS, how is WIND written in the same code? (a) CMHV (b) XJOE (c) DNIW (d) EOJX
- 2.If CAKE is written as XZPV, how is TOYS written in the same code? (a) UPZT (b) HMCI (c) FKAG (d) GLBH
- 3.If TREE is written as EERT, how is DRUM written in the same code? (a) LTQC (b) ESVN (c) NVSE (d) MURD
- 4.If PEN is written as NEP, how is FISH written in the same code? (a) GRHE (b) ITJG (c) GJTI (d) HSIF
- 5.If JUMP is written as ROWL, how is TOYS written in the same code? (a) VQAU (b) UAQV (c) SYOT (d) QWMR
- 6.If DOG is written as WLT, how is BELL written in the same code? (a) XUNN (b) YVOO (c) ZWPP (d) CFMM
- 7.If JUMP is written as PMUJ, how is MILK written in the same code? (a) NJML (b) LMJN (c) KLIM (d) JKHL
- 8.If BOAT is written as VCQD, how is STAR written in the same code? (a) UVCT (b) TCVU (c) PYRQ (d) RATS
- 9.If HAND is written as DNAH, how is NEST written in the same code? (a) TSEN (b) OFTU (c) UTFO (d) SRDM
- 10.If COLD is written as CKNB, how is GOLD written in the same code? (a) FNKC (b) DLOG (c) EMPH (d) CKNF
- 11.If BOOK is written as ZMMI, how is DRUM written in the same code? (a) FTWO (b) AORJ (c) BPSK (d) CQTL
- 12.If PARK is written as KRAP, how is MOON written in the same code? (a) NOOM (b) MNNL (c) NPPO (d) OPPN
- 13.If STAR is written as HGZI, how is BOAT written in the same code? (a) ZMAH (b) XKYF (c) YLZG (d) CPBU
- 14.If LION is written as PQKN, how is CAT written in the same code? (a) ECV (b) VCE (c) RYA (d) TAC
- 15.If TOYS is written as RMWQ, how is DRUM written in the same code? (a) CQTL (b) FTWO (c) AORJ (d) BPSK
- 16.If NEST is written as MVHG, how is BOOK written in the same code? (a) CPPL (b) ZMMQ (c) YLLP (d) XKKO
- 17.If BOOK is written as KOOB, how is TOYS written in the same code? (a) RXNS (b) UPZT (c) SYOT (d) TZPU
- 18.If BELL is written as ADKK, how is MILK written in the same code? (a) KGJI (b) MILK (c) LHKJ (d) NJML
- 19.If SUN is written as MTR, how is JUMP written in the same code? (a) ITLO (b) QNVK (c) OLTI (d) PMUJ
- 20.If KITE is written as MKVG, how is TREE written in the same code? (a) WUHH (b) VTGG (c) RPCC (d) USFF
- 21.If CAT is written as UBD, how is BALL written in the same code? (a) KKZA (b) MMBC (c) LLAB (d) CBMM
- 22.If BOAT is written as TAOB, how is GOLD written in the same code? (a) DLOG (b) HPME (c) CKNF (d) EMPH
- 23.If FISH is written as GJTI, how is CAT written in the same code? (a) ECV (b) BZS (c) UBD (d) DBU
- 24.If STAR is written as HGZI, how is PEN written in the same code? (a) JUL (b) LWN (c) QFO (d) KVM
- 25.If STAR is written as UVCT, how is BOAT written in the same code? (a) ZMYR (b) DQCV (c) CPBU (d) ERDW
- 26.If SUN is written as OVT, how is FISH written in the same code? (a) GRHE (b) ITJG (c) GJTI (d) HSIF
- 27.If TREE is written as GGTV, how is DESK written in the same code? (a) IQCB (b) KSED (c) MUGF (d) FGUM
- 28.If DESK is written as EFTL, how is BOAT written in the same code? (a) ANZS (b) UBPC (c) CPBU (d) DQCV
- 29.If MOON is written as OPPN, how is LION written in the same code? (a) MNHK (b) NOIL (c) MJPO (d) OPJM
- 30.If KITE is written as ETIK, how is CAKE written in the same code? (a) FLBD (b) DJZB (c) EKAC (d) DBLF
- 31.If SHIP is written as QJIT, how is FROG written in the same code? (a) GORF (b) HPSG (c) FNQE (d) GSPH
- 32.If HAND is written as DNAH, how is STAR written in the same code? (a) QZSR (b) TUBS (c) SBUT (d) RATS
- 33.If COLD is written as EMPD, how is DOG written in the same code? (a) FNC (b) EPH (c) GOD (d) HPE
- 34.If KITE is written as DSHJ, how is SUN written in the same code? (a) NUS (b) RTM (c) OVT (d) MTR
- 35.If BELL is written as LLEB, how is RAIN written in the same code? (a) OJBS (b) MHZQ (c) SBJO (d) NIAR
- 36.If BELL is written as MMFC, how is SUN written in the same code? (a) OVT (b) TVO (c) NUS (d) MTR
- 37.If NEST is written as TSEN, how is DOG written in the same code? (a) EPH (b) GOD (c) FNC (d) HPE
- 38.If MILK is written as NROP, how is FROG written in the same code? (a) GSPH (b) VJMU (c) THKS (d) UILT
- 39.If BALL is written as ZYJJ, how is JUMP written in the same code? (a) ITLO (b) GRJM (c) HSKN (d) LWOR
- 40.If NEST is written as MVHG, how is SHIP written in the same code? (a) HSRK (b) GRQJ (c) ITSL (d) TIJQ
Answer key
- DNIW
- GLBH
- MURD
- HSIF
- UAQV
- YVOO
- KLIM
- TCVU
- TSEN
- CKNF
- BPSK
- NOOM
- YLZG
- VCE
- BPSK
- YLLP
- SYOT
- LHKJ
- OLTI
- VTGG
- MMBC
- DLOG
- DBU
- KVM
- DQCV
- ITJG
- MUGF
- CPBU
- OPJM
- EKAC
- HPSG
- RATS
- HPE
- MTR
- NIAR
- OVT
- GOD
- UILT
- HSKN
- HSRK
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