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 BELL is written as YVOO, how is MILK written in the same code? (a) NJML (b) MQNO (c) NROP (d) OSPQ
- 2.If LION is written as NOIL, how is SUN written in the same code? (a) MTR (b) TVO (c) OVT (d) NUS
- 3.If PEN is written as KVM, how is WIND written in the same code? (a) XJOE (b) CQLV (c) DRMW (d) ESNX
- 4.If NEST is written as TSEN, how is BOOK written in the same code? (a) LPPC (b) CPPL (c) JNNA (d) KOOB
- 5.If CAT is written as XZG, how is DRUM written in the same code? (a) ESVN (b) XJGO (c) VHEM (d) WIFN
- 6.If WIND is written as EOJX, how is MILK written in the same code? (a) NJML (b) LMJN (c) JKHL (d) KLIM
- 7.If SHIP is written as QFGN, how is GOLD written in the same code? (a) FNKC (b) DLIA (c) EMJB (d) IQNF
- 8.If BOAT is written as YLZG, how is PEN written in the same code? (a) KVM (b) LWN (c) QFO (d) JUL
- 9.If LION is written as ORLM, how is BOAT written in the same code? (a) XKYF (b) YLZG (c) CPBU (d) ZMAH
- 10.If CAT is written as BZS, how is DOG written in the same code? (a) EPH (b) BME (c) CNF (d) DOG
- 11.If PARK is written as KZIP, how is FROG written in the same code? (a) THKS (b) GSPH (c) VJMU (d) UILT
- 12.If CAT is written as ECV, how is HAND written in the same code? (a) JCPF (b) KDQG (c) IBOE (d) FYLB
- 13.If RAIN is written as OJBS, how is FISH written in the same code? (a) GRHE (b) ITJG (c) GJTI (d) HSIF
- 14.If FROG is written as GSPH, how is NEST written in the same code? (a) OFTU (b) MDRS (c) PGUV (d) UTFO
- 15.If GOLD is written as HPME, how is LAMP written in the same code? (a) QNBM (b) MBNQ (c) NCOR (d) KZLO
- 16.If DESK is written as LTFE, how is COLD written in the same code? (a) CKNB (b) EMPD (c) DPME (d) DLOC
- 17.If RAIN is written as MHZQ, how is LION written in the same code? (a) KHNM (b) NOIL (c) MNHK (d) OPJM
- 18.If BOAT is written as TAOB, how is GOLD written in the same code? (a) HPME (b) CKNF (c) EMPH (d) DLOG
- 19.If PARK is written as MTCR, how is TOYS written in the same code? (a) QWMR (b) VQAU (c) SYOT (d) UAQV
- 20.If HAND is written as DNAH, how is PEN written in the same code? (a) MDO (b) NEP (c) OFQ (d) QFO
- 21.If TOYS is written as TZPU, how is BALL written in the same code? (a) MMBC (b) CBMM (c) LLAB (d) KKZA
- 22.If RAIN is written as IZRM, how is GOLD written in the same code? (a) SKNV (b) UMPX (c) TLOW (d) HPME
- 23.If KITE is written as ETIK, how is BOAT written in the same code? (a) UBPC (b) TAOB (c) CPBU (d) SZNA
- 24.If PARK is written as KRAP, how is SUN written in the same code? (a) TVO (b) MTR (c) NUS (d) OVT
- 25.If STAR is written as QZSR, how is LION written in the same code? (a) OPJM (b) NOIL (c) MNHK (d) KHNM
- 26.If SHIP is written as PIHS, how is LION written in the same code? (a) MNHK (b) NOIL (c) OPJM (d) MJPO
- 27.If TREE is written as USFF, how is COLD written in the same code? (a) BNKC (b) EMPD (c) DPME (d) EQNF
- 28.If MILK is written as NJML, how is TREE written in the same code? (a) FFSU (b) SQDD (c) VTGG (d) USFF
- 29.If LION is written as NOIL, how is PEN written in the same code? (a) QFO (b) MDO (c) OFQ (d) NEP
- 30.If BOOK is written as KOOB, how is SUN written in the same code? (a) MTR (b) NUS (c) OVT (d) TVO
- 31.If LAMP is written as OLZK, how is DESK written in the same code? (a) LTFE (b) JRDC (c) KSED (d) CDRJ
- 32.If DESK is written as KSED, how is LAMP written in the same code? (a) OLZK (b) QNBM (c) MBNQ (d) PMAL
- 33.If GOLD is written as TLOW, how is CAKE written in the same code? (a) WYOU (b) YAQW (c) DBLF (d) XZPV
- 34.If MILK is written as OKNM, how is STAR written in the same code? (a) UVCT (b) VWDU (c) TUBS (d) QRYP
- 35.If SUN is written as NUS, how is CAT written in the same code? (a) DBU (b) UBD (c) TAC (d) SZB
- 36.If DOG is written as GOD, how is WIND written in the same code? (a) DNIW (b) CMHV (c) EOJX (d) XJOE
- 37.If TOYS is written as GLBH, how is SUN written in the same code? (a) GEL (b) TVO (c) HFM (d) IGN
- 38.If STAR is written as RATS, how is HAND written in the same code? (a) CMZG (b) IBOE (c) EOBI (d) DNAH
- 39.If LION is written as NOIL, how is DOG written in the same code? (a) EPH (b) FNC (c) GOD (d) HPE
- 40.If GOLD is written as CKNF, how is TOYS written in the same code? (a) RXNS (b) TZPU (c) SYOT (d) SNXR
Answer key
- NROP
- NUS
- DRMW
- KOOB
- WIFN
- LMJN
- EMJB
- KVM
- YLZG
- CNF
- UILT
- JCPF
- ITJG
- OFTU
- MBNQ
- EMPD
- MNHK
- DLOG
- UAQV
- NEP
- MMBC
- TLOW
- TAOB
- NUS
- MNHK
- NOIL
- DPME
- USFF
- NEP
- NUS
- JRDC
- PMAL
- XZPV
- UVCT
- TAC
- DNIW
- HFM
- DNAH
- GOD
- RXNS
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