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Level 20 of 20 in Learning Lab's logic ladder, in the “Masters” stage. Many children reach it around ages 11–12, but levels aren't tied to age.

This sheet has 6 questions at this level. Mastered after two sheets in a row at 90% or more. It can be printed or done on screen in kid mode.

Learning Lab

Logic · Level 20

Codes and ciphers (two steps)

L20-8CXY

Owen · Week of Nov 2

Name: Score: / 6
  1. 1.

    Secret code! To make it, the letters were written in reverse order, then each letter was moved 3 along the alphabet (A→D).

  2. 2.

    Secret code! To make it, the letters were written in reverse order, then each letter was moved 2 along the alphabet (A→C).

  3. 3.

    Secret code! To make it, the letters were written in reverse order, then each letter was moved 2 along the alphabet (A→C).

  4. 4.

    Secret code! To make it, each letter was moved 1 along the alphabet (A→B), then the letters were written in reverse order.

  5. 5.

    Secret code! To make it, each letter was moved 1 along the alphabet (A→B), then the letters were written in reverse order.

  6. 6.

    Secret code! To make it, the letters were written in reverse order, then each letter was moved 3 along the alphabet (A→D).

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Learning Lab · Answer key

Logic · Level 20

Codes and ciphers (two steps)

L20-8CXY

Owen · Week of Nov 2

For grown-ups — keep this page separate from the sheet.

  1. OTTER
  2. COMET
  3. PIRATE
  4. PANDA
  5. DAISY
  6. BANJO