Smaller = 1 unit, larger = 3 units. Together they make 4 units = 744.<br><br>[[model:questions/solutions/q3221.png]]<br><br>• 4 units → 744<br>• 1 unit (smaller) → 744 ÷ 4 = 186<br><br>The smaller number is 186.<br>Check: 186 + 558 = 744 and 558 = 3 × 186. ✓