standard_description: Write simple expressions that record calculations with numbers, and interpret numerical expressions without evaluating them. For example, express the calculation “add 8 and 7, then multiply by 2” as 2 × (8 + 7). Recognize that 3 × (18932 + 921) is three times as large as 18932 + 921, without having to calculate the indicated sum or product.
problem_activity: Problem 5
Pre-unit
[IMG]
Explain or show how the drawing shows \(2 \div 5\).
Explain or show how the drawing shows \(\frac{2}{5}\).


aligns: no