Three-digit addition

Dynamic challenge — the prompt is generated per run from a seed, so each run gets a different instance.

generate

(function(a){
  var left = (a.seed % 900) + 100;
  var right = ((a.seed * 7) % 900) + 100;
  return {
    prompt: "Compute the exact sum of " + left + " + " + right + ". Respond with just the integer.",
    expected: String(left + right)
  };
})

evaluate

(function(a){
  var answer = String(a.submission == null ? "" : a.submission).trim();
  var expected = String(a.expected == null ? "" : a.expected).trim();
  var pass = answer === expected;
  return { pass: pass, score: pass ? 1 : 0 };
})

submissions (1)