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 RAIN is written as OJBS, how is FROG written in the same code? (a) FNQE (b) GSPH (c) HPSG (d) GORF
- 2.If RAIN is written as PYGL, how is CAKE written in the same code? (a) AYIC (b) BZJD (c) ZXHB (d) ECMG
- 3.If STAR is written as RATS, how is RAIN written in the same code? (a) NIAR (b) MHZQ (c) OJBS (d) SBJO
- 4.If MOON is written as NLLM, how is CAKE written in the same code? (a) XZPV (b) WYOU (c) YAQW (d) DBLF
- 5.If LION is written as ORLM, how is CAT written in the same code? (a) WYF (b) YAH (c) DBU (d) XZG
- 6.If TOYS is written as RMWQ, how is STAR written in the same code? (a) PQXO (b) UVCT (c) QRYP (d) RSZQ
- 7.If FISH is written as URHS, how is CAT written in the same code? (a) XZG (b) YAH (c) WYF (d) DBU
- 8.If BOAT is written as DQCV, how is DRUM written in the same code? (a) GUXP (b) FTWO (c) ESVN (d) BPSK
- 9.If DESK is written as KSED, how is CAT written in the same code? (a) TAC (b) DBU (c) SZB (d) UBD
- 10.If KITE is written as NLWH, how is DOG written in the same code? (a) GRJ (b) HSK (c) ALD (d) FQI
- 11.If BOAT is written as TAOB, how is DRUM written in the same code? (a) ESVN (b) LTQC (c) MURD (d) NVSE
- 12.If MOON is written as KMML, how is SUN written in the same code? (a) PRK (b) RTM (c) QSL (d) UWP
- 13.If MOON is written as PQQO, how is HAND written in the same code? (a) BLYF (b) JCPF (c) FPCJ (d) DNAH
- 14.If MOON is written as NLLM, how is FISH written in the same code? (a) VSIT (b) TQGR (c) URHS (d) GJTI
- 15.If BALL is written as YZOO, how is GOLD written in the same code? (a) TLOW (b) UMPX (c) HPME (d) SKNV
- 16.If BOOK is written as YLLP, how is MILK written in the same code? (a) OSPQ (b) MQNO (c) NJML (d) NROP
- 17.If GOLD is written as DLOG, how is JUMP written in the same code? (a) OLTI (b) PMUJ (c) KVNQ (d) QNVK
- 18.If KITE is written as FUJL, how is LION written in the same code? (a) MNHK (b) OPJM (c) NOIL (d) MJPO
- 19.If HAND is written as DNAH, how is MOON written in the same code? (a) NOOM (b) NPPO (c) OPPN (d) MNNL
- 20.If STAR is written as TUBS, how is MOON written in the same code? (a) NPPO (b) OPPN (c) OQQP (d) LNNM
- 21.If LAMP is written as MBNQ, how is BOOK written in the same code? (a) LPPC (b) ANNJ (c) DQQM (d) CPPL
- 22.If KITE is written as GVKM, how is DOG written in the same code? (a) FQI (b) GOD (c) IQF (d) EMB
- 23.If WIND is written as VHMC, how is DRUM written in the same code? (a) BPSK (b) DRUM (c) CQTL (d) ESVN
- 24.If FROG is written as UILT, how is GOLD written in the same code? (a) SKNV (b) HPME (c) TLOW (d) UMPX
- 25.If SHIP is written as VKLS, how is BOAT written in the same code? (a) DQCV (b) ERDW (c) FSEX (d) YLXQ
- 26.If SUN is written as RTM, how is NEST written in the same code? (a) OFTU (b) MDRS (c) LCQR (d) NEST
- 27.If NEST is written as TSEN, how is MOON written in the same code? (a) OPPN (b) NPPO (c) MNNL (d) NOOM
- 28.If BOOK is written as JNNA, how is CAT written in the same code? (a) BZS (b) TAC (c) SZB (d) UBD
- 29.If LAMP is written as OLZK, how is NEST written in the same code? (a) TSEN (b) MDRS (c) SRDM (d) UTFO
- 30.If STAR is written as RATS, how is FISH written in the same code? (a) GRHE (b) GJTI (c) HSIF (d) ITJG
- 31.If HAND is written as FYLB, how is CAKE written in the same code? (a) BZJD (b) ECMG (c) ZXHB (d) AYIC
- 32.If RAIN is written as MHZQ, how is MILK written in the same code? (a) KLIM (b) LHKJ (c) LMJN (d) JKHL
- 33.If PEN is written as QFO, how is LAMP written in the same code? (a) QNBM (b) MBNQ (c) NCOR (d) KZLO
- 34.If PEN is written as MDO, how is TREE written in the same code? (a) SQDD (b) EERT (c) DDQS (d) FFSU
- 35.If CAKE is written as XZPV, how is FISH written in the same code? (a) VSIT (b) GJTI (c) URHS (d) TQGR
- 36.If RAIN is written as NIAR, how is MILK written in the same code? (a) JKHL (b) NJML (c) KLIM (d) LMJN
- 37.If MILK is written as NROP, how is SUN written in the same code? (a) HFM (b) TVO (c) IGN (d) GEL
- 38.If SUN is written as NUS, how is TOYS written in the same code? (a) TZPU (b) SYOT (c) UPZT (d) RXNS
- 39.If DESK is written as WVHP, how is FISH written in the same code? (a) GJTI (b) TQGR (c) URHS (d) VSIT
- 40.If CAKE is written as EKAC, how is BALL written in the same code? (a) MMBC (b) CBMM (c) KKZA (d) LLAB
Answer key
- HPSG
- AYIC
- NIAR
- XZPV
- XZG
- QRYP
- XZG
- FTWO
- TAC
- GRJ
- MURD
- QSL
- FPCJ
- URHS
- TLOW
- NROP
- PMUJ
- OPJM
- NOOM
- NPPO
- CPPL
- IQF
- CQTL
- TLOW
- ERDW
- MDRS
- NOOM
- SZB
- SRDM
- HSIF
- AYIC
- JKHL
- MBNQ
- DDQS
- URHS
- KLIM
- HFM
- SYOT
- URHS
- LLAB
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