Grades 3-4 Video Solutions 2025-2025_3-4

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The problem involves determining the mass of three objects of different weights, with each mass being 1, 2, 3, 4, or 5 kilograms. By analyzing the weighings, it is established that the stars are the lightest, the circles the heaviest, and the squares are intermediate. Stars weigh 1 kilogram each, as two stars weigh less than one square. Since circles are heavier, squares can't weigh 5 and must weigh 3 kilograms each. Circles weigh 5 kilograms each, given that three squares (9 kg) weigh less than two circles (10 kg). Thus, the mass of one square is 3 kilograms.