The Math Meridian
Back to Grade 5

Coding: loops, conditions and variables

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Learn it Trace a program by writing the value of each variable after every step. Loops repeat; "if" conditions choose which step runs.

Example: total = 0. For i from 1 to 5: total = total + i × i.

  1. i = 1: total = 1. i = 2: total = 1 + 4 = 5.
  2. i = 3: 5 + 9 = 14. i = 4: 14 + 16 = 30.
  3. i = 5: 30 + 25 = 55.

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