Add the decimals: align the decimal points.<br><br>&bull; 6.58 + 7.64<br>&bull; 8 + 4 = 12 hundredths: write 2, carry 1 to tenths<br>&bull; 5 + 6 + 1(carry) = 12 tenths: write 2, carry 1 to ones<br>&bull; 6 + 7 + 1(carry) = 14 ones<br>&bull; 6.58 + 7.64 = 14.22<br><br>Final Answer: 14.22