1. Math 50 Technical Mathematics

2. Topics Whole numbers Whole numbers Decimals Decimals Fractions Fractions Percent Percent Ratio and Proportion Ratio and Proportion

3. Terminology Natural numbers: {1, 2, 3,…} Natural numbers: {1, 2, 3,…} Whole numbers: {0, 1, 2, 3,…} Whole numbers: {0, 1, 2, 3,…} Integers: { …-3, -2, -1, 0, 1, 2, 3, …} Integers: { …-3, -2, -1, 0, 1, 2, 3, …} consist of the whole nos. and their opposites consist of the whole nos. and their opposites

4. Whole numbers and their operations Addition Addition Subtraction Subtraction Multiplication Multiplication Division Division

5. Decimals and their operations Addition Addition Subtraction Subtraction Multiplication Multiplication Division Division

6. Fractions and their operations Simplifying fractions Simplifying fractions Addition Addition Subtraction Subtraction Multiplication Multiplication Division Division

7. Percent Percent means “per hundred” Percent means “per hundred” Conversion between percent, decimals and fractions. Conversion between percent, decimals and fractions. Examples: 17% = 0.17 = 17 Examples: 17% = 0.17 = 17 100 100 100% = 1 = 100 100% = 1 = 100 100 100

8. Ratio and Proportion Define a ratio: a Define a ratio: a b Define a proportion. Define a proportion. a = c a = c b d b d