A PDF resource focusing on simple mathematics allows you to focus on the of the model rather than the mechanics of the calculation.
by Larry Reynolds: This 300-page textbook is published under a Creative Commons license and focuses on the "economic way of thinking" with simplified mathematical models for demand, supply, and optimization. You can download the full version here Simplified Principles of Microeconomics microeconomics with simple mathematics pdf
Here are some recommended that cover microeconomics with approachable math (algebra, basic graphs, and minimal calculus): A PDF resource focusing on simple mathematics allows