1) 1.1 + 1.2 = 2) 3.1 + 1.8 = 3) 4.2 - 0.1 = 4) 1.1 + 2.1 = 5) 0.8 - 0.5 = 6) 4.1 + 3.2 = 7) 11.1 + 2.5 = 8) 3.9 - 0.8 = 9) 1.1 + 2.5 = 10) 1.6 + 2.1 =

Decimal addition and subtraction

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