Calculate $10\times18$10×18 by completing an area model.
Firstly, complete the missing values in the area model.
Now add the values you found in part a to calculate $10\times18$10×18.
Let's use the area model to find $28\times15$28×15.
Use the area model to find $33\times22$33×22.
Use the area model to find $99\times76$99×76.
selects and applies appropriate strategies for multiplication and division, and applies the order of operations to calculations involving more than one operation