Regroup 1 one as 10 tenths, then subtract.<br><br>
• 7.2 = 6 ones + 12 tenths<br>
• 2.5 = 2 ones + 5 tenths<br>
• Ones: 6 − 2 = 4<br>
• Tenths: 12 − 5 = 7<br>
• 7.2 − 2.5 = 4.7<br><br>
Final Answer: 4.7