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 TREE is written as EERT, how is PARK written in the same code? (a) JQZO (b) QBSL (c) KRAP (d) LSBQ
- 2.If BELL is written as CFMM, how is MILK written in the same code? (a) NJML (b) OKNM (c) LHKJ (d) LMJN
- 3.If FROG is written as IURJ, how is BELL written in the same code? (a) FIPP (b) EHOO (c) YBII (d) DGNN
- 4.If MILK is written as KLIM, how is TREE written in the same code? (a) EERT (b) FFSU (c) DDQS (d) USFF
- 5.If DRUM is written as WIFN, how is FISH written in the same code? (a) TQGR (b) URHS (c) GJTI (d) VSIT
- 6.If RAIN is written as PKCT, how is DOG written in the same code? (a) FQI (b) EMB (c) IQF (d) GOD
- 7.If MOON is written as NLLM, how is SHIP written in the same code? (a) TIJQ (b) GRQJ (c) ITSL (d) HSRK
- 8.If DOG is written as WLT, how is PEN written in the same code? (a) QFO (b) LWN (c) JUL (d) KVM
- 9.If FISH is written as JUKH, how is COLD written in the same code? (a) DLOC (b) EQNF (c) FNQE (d) BJMA
- 10.If PARK is written as KZIP, how is BOAT written in the same code? (a) XKYF (b) CPBU (c) ZMAH (d) YLZG
- 11.If BOAT is written as ERDW, how is DESK written in the same code? (a) ABPH (b) FGUM (c) HIWO (d) GHVN
- 12.If RAIN is written as IZRM, how is JUMP written in the same code? (a) PEMJ (b) QFNK (c) KVNQ (d) RGOL
- 13.If SHIP is written as RGHO, how is FISH written in the same code? (a) GJTI (b) DGQF (c) FISH (d) EHRG
- 14.If DOG is written as CNF, how is KITE written in the same code? (a) KITE (b) IGRC (c) LJUF (d) JHSD
- 15.If NEST is written as VUGP, how is WIND written in the same code? (a) DNIW (b) FPKY (c) BLGU (d) YKPF
- 16.If WIND is written as ZLQG, how is SUN written in the same code? (a) UWP (b) WYR (c) VXQ (d) PRK
- 17.If FISH is written as URHS, how is TOYS written in the same code? (a) FKAG (b) HMCI (c) UPZT (d) GLBH
- 18.If BOAT is written as YLZG, how is WIND written in the same code? (a) CQLV (b) DRMW (c) ESNX (d) XJOE
- 19.If NEST is written as QHVW, how is BALL written in the same code? (a) FEPP (b) EDOO (c) YXII (d) DCNN
- 20.If CAT is written as DBU, how is COLD written in the same code? (a) EQNF (b) DPME (c) EMPD (d) BNKC
- 21.If TREE is written as EERT, how is DOG written in the same code? (a) HPE (b) EPH (c) GOD (d) FNC
- 22.If BELL is written as LLEB, how is PEN written in the same code? (a) NEP (b) MDO (c) QFO (d) OFQ
- 23.If FROG is written as HTQI, how is KITE written in the same code? (a) MKVG (b) NLWH (c) LJUF (d) IGRC
- 24.If NEST is written as MVHG, how is STAR written in the same code? (a) GFYH (b) TUBS (c) IHAJ (d) HGZI
- 25.If CAKE is written as XZPV, how is STAR written in the same code? (a) TUBS (b) GFYH (c) HGZI (d) IHAJ
- 26.If CAT is written as VCE, how is MOON written in the same code? (a) LMMK (b) OQQP (c) PQQO (d) NOOM
- 27.If WIND is written as DNIW, how is PARK written in the same code? (a) QBSL (b) JQZO (c) LSBQ (d) KRAP
- 28.If MOON is written as OPPN, how is BOOK written in the same code? (a) CPPL (b) JNNA (c) KOOB (d) LPPC
- 29.If MOON is written as NLLM, how is KITE written in the same code? (a) OQFU (b) PRGV (c) LJUF (d) QSHW
- 30.If SUN is written as NUS, how is NEST written in the same code? (a) TSEN (b) OFTU (c) SRDM (d) UTFO
- 31.If MOON is written as NPPO, how is LAMP written in the same code? (a) NCOR (b) MBNQ (c) KZLO (d) QNBM
- 32.If CAT is written as XZG, how is COLD written in the same code? (a) DPME (b) WKNV (c) YMPX (d) XLOW
- 33.If COLD is written as BNKC, how is CAKE written in the same code? (a) AYIC (b) BZJD (c) DBLF (d) CAKE
- 34.If KITE is written as PRGV, how is CAT written in the same code? (a) YAH (b) XZG (c) WYF (d) DBU
- 35.If BELL is written as LLEB, how is STAR written in the same code? (a) QZSR (b) SBUT (c) TUBS (d) RATS
- 36.If BOOK is written as KOOB, how is MILK written in the same code? (a) KLIM (b) JKHL (c) LMJN (d) NJML
- 37.If NEST is written as TSEN, how is MILK written in the same code? (a) LMJN (b) KLIM (c) JKHL (d) NJML
- 38.If CAT is written as TAC, how is BOOK written in the same code? (a) LPPC (b) KOOB (c) CPPL (d) JNNA
- 39.If CAT is written as UBD, how is JUMP written in the same code? (a) KVNQ (b) OLTI (c) PMUJ (d) QNVK
- 40.If FROG is written as GSPH, how is NEST written in the same code? (a) MDRS (b) UTFO (c) PGUV (d) OFTU
Answer key
- KRAP
- NJML
- EHOO
- EERT
- URHS
- IQF
- HSRK
- KVM
- FNQE
- YLZG
- GHVN
- QFNK
- EHRG
- JHSD
- FPKY
- VXQ
- GLBH
- DRMW
- EDOO
- DPME
- GOD
- NEP
- MKVG
- HGZI
- HGZI
- PQQO
- KRAP
- LPPC
- PRGV
- TSEN
- MBNQ
- XLOW
- BZJD
- XZG
- RATS
- KLIM
- KLIM
- KOOB
- QNVK
- OFTU
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