What are some mental math strategies?
What are some mental math strategies? So let's get on to the practical part of this writing: mental math strategies for EVERYONE.The "9-trick". To add 9 to any number, first add 10, and then subtract 1. Doubles + 1. Use addition facts when adding bigger numbers. Subtract by adding. Five times a number. Four and eight times a number. Multiply in parts. What is a mental strategy in math? Mental math involves looking at numbers and knowing how to manipulate them in order to make an equation easier to solve. Mental math means possessing “tools” that can be used to...