Lesson

Let's go over some of the multiplication and division strategies and problems we've looked at. These include:

using arrays and area models

partitioning numbers by place value

using a vertical algorithm

We also looked at using a vertical algorithm to solve multiplication or division , for larger numbers. This strategy is useful if we need to trade, or regroup.

Multiply 250 by 80.

Worked Solution

Find the value of 856 \div 8.

Worked Solution

Find the value of 3244 \div 4.

Worked Solution

Idea summary

Arrays and the area models are great to solve multiplication or division problems when there will be no remainder. If we are not sure, we can use the vertical algorithm strategy.

Select and apply efficient mental and written strategies and appropriate digital technologies to solve problems involving all four operations with whole numbers and make estimates for these computations