Add, subtract, multiply, and divide decimals. Simplify numerical expressions using the order of operations. Student can work with and understand the meaning of ratios, rates, proportions, and percents. Carry out fraction, decimal, and percent conversions. Solve percent equations.
Student can estimate and judge the reasonableness of answers.
Estimate the percent of a number. Identify an approximate answer to an application problem prior to working it out. Student can communicate effectively about mathematics.