**Additional Practice**

__Problem Solving__** (level of difficulty: 350 to 500) **

Rhyming primes (prime numbers)

Prime factors (prime factorization)

Product wxyz (prime factorization)

Even and odd m-values (integer properties, strange operators)

__Problem Solving__** (level of difficulty: 500 to 650)**

NOT a divisor of x (divisibility, algebra)

Must be divisor of n (divisibility, remainders)

Multiple of 990 (divisibility)

GCD of 35x and 20y (divisibility)

Prime factors (divisibility)

Number of zeros (prime factorization)

Bag of chips (prime factorization)

__Problem Solving__** (level of difficulty: 650 to 800)**

Possible values of 2x + y (remainders)

Smallest value of x+y+z (remainders)

x is a factor of 2y (divisibility)

From 10! to 10! + 20 (divisibility)

__Data Sufficiency__** (level of difficulty: 350 to 500)**

Looking for an even product (integer properties)

Checking whether b is negative (divisibility, powers)

Is 4 + n/6 an integer? (divisibility)

Find the value of r (remainders)

__Data Sufficiency__** (level of difficulty: 500 to 650)**

Is x a multiple of y? (divisibility)

Looking for an integer (divisibility)

Is z even? (divisibility)

When k is divided by 10 (divisibility)

Find value of K (divisibility)

Value of xy (divisibility)

Is N odd? (integer properties, divisibility)

Is n divisible by 6? (divisibility)

Looking for a prime (divisibility)

__Data Sufficiency__** (level of difficulty: 650 to 800)**

Product divisible by 8 (divisibility, probability)

Integer root (integer properties, roots)

Value of positive integer m (divisibility, remainders)

GCD of m and n (divisibility)

Multiple of 18 (divisibility)

Is y prime? (divisibility)

**Practice from the Official Guides**

**Official Guide for GMAT Review (2015 edition or 13th edition)**

Problem Solving: 5, 26, 40, 44, 74, 77, 87, 95, 110, 116, 117, 118, 127, 155, 174, 204, 218, 219, 221, 225

Data Sufficiency: 7, 14, 27, 32, 58, 72, 80, 83, 111, 135, 173

**Official Guide for GMAT Quantitative Review (2nd edition)**

Problem Solving: 31, 68, 78, 98, 109, 112, 125, 144, 147, 149, 164, 169, 172

Data Sufficiency: 3, 16, 20, 35, 39, 45, 64, 70, 78, 82, 86, 87, 90, 92, 110, 115

Track your progress by entering answers directly into our free, downloadable GMAT Prep Now Improvement Chart for the Official Guide (**2015 edition or 13th edition**)