Viết (theo mẫu):
458 = 400 + 50 + 8
391 = ...................
273 = ...................
916 = ...................
502 = ...................
760 = ...................
458 = 400 + 50 + 8
391 = 300 + 90 + 1
273 = 200 + 70 + 3
916 = 900 + 10 + 6
502 = 500 + 2
760 = 700 + 60
-- Mod Toán 2
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