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# Archive | Basics

## GMAT Math: How to Divide by a Square Root

A lot of students prepping for GMAT Quant, especially those GMAT students away from math for a long time, get lost when trying to divide by a square root. However, dividing by square roots is not something that should intimidate you. With a short refresher course, you’ll be able to divide by square roots in […]

## Matemática GMAT: Decimais Exatos e Periódicos

Decimais exatos e periódicos parecem ser um grande tema nos GMAT mais recentes como nunca antes. Revise nossas dicas para melhorar suas habilidades!

## Matemáticas para el GMAT: decimales periódicos y exactos

Los decimales exactos y periódicos parecen ser un tema cada vez más importante en el GMAC. ¡Mira estos consejos para mejorar tus habilidades!

## Matemática GMAT: Como Dividir por Uma Raíz Quadrada

Muitos estudantes de GMAT ficam perdidos tentando dividir raízes quadradas. Mike mostra como resolvê-las!

## Matemáticas para el GMAT: cómo dividir por una raíz cuadrada

Muchos estudiantes del GMAT se pierden al tratar de dividir por una raíz cuadrada. ¡Mike te enseña cómo resolverlo!

## GMAT Quant: Rates and Ratios

What are rates and ratios? How do rate and ratios problems differ? Hint: Not that much. Original photo by Pierre Rougier In fact, rates are just ratios in disguise. Here are a four GMAT practice problems exploring rates and ratios.  Remember: no calculator! Rates and Ratios Practice Problems 1) Someone on a skateboard is traveling 12 miles […]

## GMAT Practice Problems on Motion

Here are five practice questions.  Remember: no calculator. 1) A car, moving at a constant speed, covers 100 m in 5 seconds.  What is the car’s speed in km/hr? (1 km = 1000 m) (A) 20 km/hr (B) 54 km/hr (C) 60 km/hr (D) 72 km/hr (E) 90 km/hr   2) Frank and Georgia started […]

## Practice Problems on Powers and Roots

Here are ten reasonably challenging problems on powers and roots.  Solutions follow the problems.   Remember, no calculator! Statement #1: x < 1 Statement #2: x > –1 4 8 14 28 42 5) If A is an integer, what is the value of A? 11 30 45 75 225   Powers & roots This is […]

## GMAT Practice Questions with Fractions and Decimals

Here are ten problems on fractions and decimals, some of which are quite challenging.  Remember, no calculator! (A) 0.1 (B) 1 (C) 10 (D) 100 (E) 1000 6)  Suppose you have access to a large vat of distilled water, several gallons large.  You have two precise measuring pipettes, one to measure exactly 1/3 of an […]

## GMAT Math: The Uses and Abuses of Formulas

First, a few practice problems: 1) In the figure above, AC = BC = 8, angle C = 90°, and the circular arc has its center at point C.   Find the area of the shaded region. 2)  Employees at a company will vote for an executive team of five people from eight qualified candidates.  The […]