Subtract the decimals by aligning the decimal points. Write 4.3 as 4.30 so the hundredths places align.<br><br>
&bull; 4.3 − 1.57 = 4.30 − 1.57<br>
&bull; 0 hundredths − 7 hundredths: not enough, regroup 1 tenth into 10 hundredths<br>
&bull; 4 ones 3 tenths 0 hundredths = 4 ones 2 tenths 10 hundredths<br>
&bull; 10 hundredths − 7 hundredths = 3 hundredths<br>
&bull; 2 tenths − 5 tenths: not enough, regroup 1 one into 10 tenths<br>
&bull; 4 ones 2 tenths = 3 ones 12 tenths<br>
&bull; 12 tenths − 5 tenths = 7 tenths<br>
&bull; 3 ones − 1 one = 2 ones<br>
&bull; 4.30 − 1.57 = 2.73<br>
&bull; Check: 2.73 + 1.57 = 4.30 = 4.3 ✓<br><br>
Final Answer: 2.73