Fourth graders work multi-step angle puzzles where one wrong move throws off the whole answer. Multiple choice sets up problems like complementary angles where one is 28°, two supplementary angles that differ by 40°, and a straight angle split into 50°, 65°, and an unknown piece.

Fill-in problems push further: an angle equal to its own supplement, the supplement of the complement of 30°, and two angles on a straight line in a 1:2 ratio. Each problem rewards careful reading and a clean subtraction step. Students build the habit of checking that every pair sums to exactly 90° or 180°.