1. Math 801A: Mental Math – Multiplication and Division Strategies
Mathematics Essentials
Feb 23rd, 2017

2. Lesson Introduction Today I will...
use mental math and estimation strategies for operations involving integers
apply mental math and estimation strategies in problem situations when appropriate

3. Important Terms - Review (Addition)
A + B = C
addend + addend = sum

4. Important Terms – Review (Subtraction)
A - B = C
minuend - subtrahend = difference

5. Important Terms (Multiplication)
A x B = C
factor x factor = product

6. Front-End Strategy
Decompose (think compatible factors) and multiply through from left to right.
Practice q’s 1A-D on pg 10.

7. Important Terms (Division)
A ÷ B = C
dividend ÷ divisor = quotient

8. Front-End Strategy
Divide from left to right by decomposing the dividend (think compatible factors).
Practice q’s 1A-D on pg 12.

9. Homework!
Mental Math multiplication and division assignments (pg 11, Q3; pg 13, Q3) are due for the start of TUESDAY’s class.