Unit rate compares measurements where second term equals 1. Unit rate is a special type of ratio. Common examples include speed, unit price, and wage. Look for "per" in problem description to identify unit rate
Ratios compare two or more numbers in mathematical expressions. They can show absolute quantities or parts of a whole. Ratios can be written using words or mathematical symbols
Proportion means two ratios or fractions are equal. Rope length and weight are proportional: 20m/1kg = 40m/2kg. Shapes are proportional when their relative sizes are the same. International paper sizes have consistent proportions
Ratio compares one number to another using A:B format. Ratios are used in finance, photography, architecture, and engineering. Order of numbers matters in ratio relationships
Free printable worksheets organized by math topics. Randomly generated and printable from browser. Includes answer keys on second page. Supports any 6th grade math program, especially IXL curriculum
Proportion occurs when two quantities change in a corresponding manner. Direct proportion exists when one quantity increases while the other increases. The ratio of quantities in direct proportion remains constant. The symbol for direct proportion is "∝"