Tính (theo mẫu)
2cm × 3 = 6cm
2cm × 4 = .....
2cm × 9 = .....
2cm × 5 = .....
2kg × 2 = .....
2kg × 7 = .....
2kg × 8 = .....
2kg × 10 = .....
2cm × 4 = 8cm
2cm × 9 = 18cm
2cm × 5 = 10cm
2kg × 2 = 4kg
2kg × 7 = 14kg
2kg × 8 = 16kg
2kg × 10 = 20kg
-- Mod Toán 2
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