Multiplication and division within 1,000, and long addition/subtraction.

Solving complex expressions with parentheses. Geometry: Calculating the perimeter and area of rectangles.

Converting length (m to cm), weight, and time. Example Problem Walkthrough

Tasks requiring 2–4 operations to find the final answer.

There are 169 artifacts in a museum hall. 49 are clay, one-third of the remainder are wood, and the rest are stone. How many are stone? Step-by-Step Solution: Find the remainder after clay: (artifacts) Find the wooden artifacts (1/3 of the remainder): (artifacts) Find the stone artifacts: (artifacts) Alternatively: Answer: 80 stone artifacts. Where to Find Full Answers