Addition & Subtraction Addition & Subtraction of Decimals 3.7 + 5.09 = 0.29 + 0.157 = 8.12 – 2.4 = 5 + 1.32 = 14 - 3.16 = 7 - 0.521 = Addition & Subtraction of Decimals 3.7 + 5.09 = 0.29 + 0.157 = 8.12 – 2.4 = 5 + 1.32 = 14 - 3.16 = 7 - 0.521 =