Add and subtract decimals to hundredths using concrete models, mental math strategies, and the standard algorithm.

Add and subtract fractions and mixed numbers with like denominators using visual models, number lines, and algebraic properties, solving single- and multi-step word problems.

Solve additive angle decomposition problems involving adjacent angles, angles on straight lines, angles around a point, and vertically opposite angles.

Describe event likelihoods using formal vocabulary, place probabilities on a 0-to-1 number line, and compute theoretical probabilities as fractions.

Identify and define key parts of a circle including center, radius, diameter, and chord, understand the relationship d = 2r, and construct circles.

Classify triangles by both side lengths and angle measures, understand that triangle interior angles sum to 180°, and solve for missing angles.

Compare and order proper fractions, improper fractions, and mixed numbers using benchmark fractions, common numerators, and common denominators.