Add the decimals: align the decimal points.<br><br>&bull; 5.47 + 3.86<br>&bull; 7 + 6 = 13 hundredths: write 3, carry 1 to tenths<br>&bull; 4 + 8 + 1(carry) = 13 tenths: write 3, carry 1 to ones<br>&bull; 5 + 3 + 1(carry) = 9 ones<br>&bull; 5.47 + 3.86 = 9.33<br><br>Final Answer: 9.33