tlt2372 wrote:I am having extreme difficulty with Number Properties.Can someone recommend some good resources for this topic?

I purchased the Manhattan GMAT Number Properties book - I'm about half way through. I love Manhattan stuff for Verbal - but the Number Properties is just mediocre.

Do these questions from OG...if you have OG - 10th Edition (soft copy or hard copy).

Forget about time and speed in the first attempt. Focus on concepts and tactics of solving problems.

Start with Problem Solving. Once you complete all the below PS questions move to DS questions.

Section Question Difficulty
Data Sufficiency 7 Hard
Data Sufficiency 11 Hard
Data Sufficiency 13 Medium
Data Sufficiency 17 Hard
Data Sufficiency 32 Medium
Data Sufficiency 36 Hard
Data Sufficiency 40 Easy
Data Sufficiency 45 Medium
Data Sufficiency 50 Hard
Data Sufficiency 53 Hard
Data Sufficiency 57 Medium
Data Sufficiency 60 Hard
Problem Solving 48 Hard
Problem Solving 92 Medium
Problem Solving 114 Hard
Problem Solving 118 Easy
Problem Solving 128 Medium
Problem Solving 131 Hard
Problem Solving 137 Medium
Problem Solving 154 Easy
Problem Solving 164 Hard
Problem Solving 167 Medium
Problem Solving 169 Medium
Problem Solving 176 Hard
Problem Solving 189 Easy
Problem Solving 207 Medium
Problem Solving 216 Hard
Problem Solving 244 Medium