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 BOAT is written as ERDW, how is PEN written in the same code? (a) MBK (b) RGP (c) TIR (d) SHQ
- 2.If TREE is written as EERT, how is PARK written in the same code? (a) QBSL (b) JQZO (c) KRAP (d) LSBQ
- 3.If FISH is written as JUKH, how is MOON written in the same code? (a) PQQO (b) OQQP (c) LMMK (d) NOOM
- 4.If BALL is written as MMBC, how is DOG written in the same code? (a) GOD (b) HPE (c) EPH (d) FNC
- 5.If FISH is written as DGQF, how is COLD written in the same code? (a) ZLIA (b) BNKC (c) EQNF (d) AMJB
- 6.If DESK is written as FGUM, how is MOON written in the same code? (a) NPPO (b) OQQP (c) KMML (d) PRRQ
- 7.If CAT is written as UBD, how is PEN written in the same code? (a) NEP (b) OFQ (c) MDO (d) QFO
- 8.If FISH is written as ITJG, how is CAT written in the same code? (a) TAC (b) DBU (c) UBD (d) SZB
- 9.If CAKE is written as EKAC, how is PARK written in the same code? (a) QBSL (b) LSBQ (c) JQZO (d) KRAP
- 10.If HAND is written as IBOE, how is BOAT written in the same code? (a) DQCV (b) UBPC (c) CPBU (d) ANZS
- 11.If SUN is written as OVT, how is BOOK written in the same code? (a) CPPL (b) LPPC (c) JNNA (d) KOOB
- 12.If BOAT is written as VCQD, how is TREE written in the same code? (a) EERT (b) GGTV (c) VTGG (d) CCPR
- 13.If PEN is written as MDO, how is COLD written in the same code? (a) EMPD (b) BNKC (c) DLOC (d) CKNB
- 14.If LION is written as NOIL, how is DESK written in the same code? (a) LTFE (b) KSED (c) JRDC (d) EFTL
- 15.If DESK is written as KSED, how is CAT written in the same code? (a) TAC (b) UBD (c) SZB (d) DBU
- 16.If TOYS is written as SYOT, how is MOON written in the same code? (a) MNNL (b) NOOM (c) NPPO (d) OPPN
- 17.If HAND is written as SZMW, how is FROG written in the same code? (a) GSPH (b) UILT (c) VJMU (d) THKS
- 18.If WIND is written as DRMW, how is CAT written in the same code? (a) YAH (b) DBU (c) WYF (d) XZG
- 19.If DOG is written as GOD, how is DRUM written in the same code? (a) NVSE (b) MURD (c) ESVN (d) LTQC
- 20.If DOG is written as GRJ, how is PEN written in the same code? (a) TIR (b) MBK (c) SHQ (d) RGP
- 21.If JUMP is written as PMUJ, how is FISH written in the same code? (a) GRHE (b) ITJG (c) GJTI (d) HSIF
- 22.If KITE is written as IGRC, how is COLD written in the same code? (a) ZLIA (b) AMJB (c) BNKC (d) EQNF
- 23.If DESK is written as KSED, how is NEST written in the same code? (a) UTFO (b) OFTU (c) SRDM (d) TSEN
- 24.If DESK is written as CDRJ, how is COLD written in the same code? (a) BNKC (b) AMJB (c) COLD (d) DPME
- 25.If BOOK is written as JNNA, how is MOON written in the same code? (a) LNNM (b) NOOM (c) OPPN (d) MNNL
- 26.If FISH is written as URHS, how is FROG written in the same code? (a) THKS (b) GSPH (c) UILT (d) VJMU
- 27.If JUMP is written as MXPS, how is GOLD written in the same code? (a) KSPH (b) DLIA (c) JROG (d) IQNF
- 28.If FROG is written as UILT, how is PEN written in the same code? (a) JUL (b) QFO (c) LWN (d) KVM
- 29.If BOOK is written as MQQD, how is PEN written in the same code? (a) PGR (b) NEP (c) RGP (d) LCN
- 30.If CAT is written as XZG, how is COLD written in the same code? (a) XLOW (b) YMPX (c) WKNV (d) DPME
- 31.If GOLD is written as JROG, how is NEST written in the same code? (a) RIWX (b) PGUV (c) KBPQ (d) QHVW
- 32.If MILK is written as NROP, how is DOG written in the same code? (a) XMU (b) WLT (c) VKS (d) EPH
- 33.If MILK is written as PLON, how is FROG written in the same code? (a) IURJ (b) HTQI (c) JVSK (d) COLD
- 34.If CAT is written as DBU, how is BOOK written in the same code? (a) LPPC (b) ANNJ (c) DQQM (d) CPPL
- 35.If DESK is written as WVHP, how is BOOK written in the same code? (a) ZMMQ (b) CPPL (c) XKKO (d) YLLP
- 36.If FISH is written as HSIF, how is BOOK written in the same code? (a) JNNA (b) CPPL (c) KOOB (d) LPPC
- 37.If BELL is written as MMFC, how is PARK written in the same code? (a) QBSL (b) JQZO (c) KRAP (d) LSBQ
- 38.If BOOK is written as KOOB, how is FISH written in the same code? (a) GJTI (b) HSIF (c) GRHE (d) ITJG
- 39.If CAKE is written as FDNH, how is MILK written in the same code? (a) JFIH (b) PLON (c) OKNM (d) QMPO
- 40.If FROG is written as GORF, how is TOYS written in the same code? (a) TZPU (b) RXNS (c) UPZT (d) SYOT
Answer key
- SHQ
- KRAP
- PQQO
- HPE
- AMJB
- OQQP
- OFQ
- UBD
- KRAP
- CPBU
- LPPC
- GGTV
- CKNB
- KSED
- TAC
- NOOM
- UILT
- XZG
- MURD
- SHQ
- HSIF
- AMJB
- TSEN
- BNKC
- MNNL
- UILT
- JROG
- KVM
- PGR
- XLOW
- QHVW
- WLT
- IURJ
- CPPL
- YLLP
- KOOB
- LSBQ
- HSIF
- PLON
- SYOT
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