Question posted by Adriana from the United States:
Raju and Samy shared $410 between them. Raju received $100 more than Samy. How much money did Samy receive?
Step 1: Draw 2 identical boxes to represent the amount of money each boy received. Mark the 2 boxes with question marks because we do not know their value yet.
Step 2: Draw an additional box to make Raju's model bar longer by $100.
Step 3: Draw a bracket to the right of the 2 model bars to show that the total of the two is $410.
From the model,
$410 - $100 = $310
$310 / 2 = $155
Therefore, Samy received $155.