Toggle navigation
Menu
Classmill
Sarah
The Secrets of Mental...
Login
Sign Up
The Secrets of Mental Math
The Human Calculator
Math in Your Head
Mental Addition and Subtraction
Go Forth and Multiply
Divide and Conquer
The Art of Guesstimation
Mental Math and Paper
Intermediate Multiplication
The Speed of Vedic Division
Memorizing Numbers
Calender Calculating
Solutions
Advanced Multiplication
Masters of Mental Math
Learning
Discussion
MODULE
All modules
The Art of Guesstimation
The Art of Guesstimation
Lecture 5
Download
The Art of Guesstimation
Delete
Drag
The Art of Guesstimation - Problems
Answers in the Last Module!
Download
The Art of Guesstimation - Problems
Delete
Drag
Next: Mental Math and Paper