This is a deck of nearly 400 slides. The slides are sorted into the following strategies with examples and then practice questions for each type of mental math/computational fluency problem. This is based on the Nova Scotia (Canada) grade 6 mental math curriculum. -Addition: Front End, Finding Compatibles, Break up and Bridge, Etc.-Subtraction: Back through a Multiple of a Power of 10, Balancing for a Constant Difference, Etc. -Multiplication: Halving and Doubling, Finding Compatible Factors, Et