# Ideas for Progress: Mathematics, Range 13–15

To enhance their skills in each mathematics-related strand, students who score in the 13–15 score range on the ACT® college readiness assessment may benefit from activities that encourage them to do the following:

Number and Quantity recognize and apply place value, rounding, and basic properties of integers locate and describe integers in terms of their position on the number line investigate and build understanding of the concept of percentage as a comparison of a part to a whole use multiple operations to solve multistep mathematical problems model a variety of real-world and mathematical problems with graphs use the language of the discipline (e.g., greater than and less than, increasing and decreasing) to describe real-world and mathematical problems use mathematical symbols and variables to express a relationship between quantities (e.g., the number of 59¢ candy bars that you can buy for \$5 must satisfy 59n ≤ 500) evaluate algebraic expressions and solve simple equations, using whole numbers identify like terms in algebraic expressions compare numerical patterns generated by a simple addition rule (e.g., add 2) and a simple multiplication rule (e.g., multiply by 2) apply the definitions of parallel and perpendicular lines to describe characteristics of real-world and mathematical problems describe, compare, and contrast plane and solid figures, using their properties distinguish between area and perimeter, and find the area or perimeter when all relevant dimensions are given locate and describe objects in terms of their relative positions solve real-world and mathematical problems that involve measures of central tendency (e.g., mean, median, mode) read and interpret data from different displays (e.g., box-and-whisker plots, stem-and-leaf plots), and use them along with additional information to solve real-world and mathematical problems conduct simple probability experiments, and represent results using different displays find the probability of a simple event and the probability of its complement