The little green math book : 30 powerful principles for building math and numeracy skills / Brandon Royal.

1. Basic Numeracy Ingredients. Percentages
Ratios and proportions
Reciprocals
Order of operations
2. Wonderful Math Recipes. Overlap scenarios
Matrix scenarios
Mixture scenarios
Weighted average scenarios
3. Favorite Numeracy Dishes. Markup vs. margin
Price, cost, volume, and profit
Break-even point
Aggregate costs vs. per-unit costs
Efficiency
Distribution and allocation
4. Special Math Garnishments. Translating basic graphs
Line graphs, pie charts, and bar charts
Correlation
Measures of average and dispersion
Statistical significance
Numeracy principles 1 to 30
The world of numbers.