Let's go over some of the and 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 or , for larger numbers. This strategy is useful if we need to trade, or regroup.
Multiply 250 by 80.
Find the value of 856 \div 8.
Find the value of 3244 \div 4.
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