## Quick(er) Calculations: How to add, subtract, multiply, divide, square, and square root more swiftly .

By：Trevor Davis Lipscombe

Update：2021

ISBN/ASIN：0198852657

Finalist of the 2022 PROSE Awards

How fast can you calculate? Would you like to be faster? This book presents the time honored tricks and ti ...

## Subtract: The Untapped Science of Less .

By：Klotz, Leidy

Update：2019

ISBN/ASIN：1250249864

Blending evidence across science and design, Subtract: The Untapped Science of Less offers a revolution in problem-solving: proving why we overlook subtract ...

## Dynamic Denominators: Compare, Add, and Subtract (Got Math!) .

By：Dynamic Denominators: Compare, Add, and Subtract (Got Math!)

Update：2014

ISBN/ASIN：1627178384

Get to the bottom of fractions with this rhyming title about dynamic denominators. Understand the importance ...

## The Friendship Formula: Add great friends, subtract toxic people and multiply your happiness .

By：Caroline Millington

Update：May 16th, 2019

ISBN/ASIN：1788545400

Friendship is such an important part of our lives but how much to we really know about it? Do we understand how it works, what it is and wh ...

## Math Basics Made Easy: Teach Yourself How to Add, Subtract, Multiply and Divide .

By：Steve Slavin, Ginny Crisonino

Update：February 24, 2012

ISBN/ASIN：B007D7LNFY

There's an unspoken weak spot in our society most adults can't do basic math.

A recent U.S. Department of Educ ...