Lesson 01: Using Decimals in a Shopping Context | Unit 5: Arithmetic in Base Ten

A pack of origami paper costs $7.50. Diego’s club has $40 to spend on supplies. How many packs can they afford? Explain or show your reasoning.

Pencils cost $3.20 per package. What is the exact cost of 3 packages of pencils? Answer each question and show your reasoning.

Markers cost $4.59 per package. What is the exact cost of 3 packages of markers? Answer each question and show your reasoning.

Pencils cost $3.20 per package, and markers cost $4.59 per package. How much more do 3 packages of markers cost than 3 packages of pencils? Answer each question and show your reasoning.

Explain or show how you know the second triangle you drew has an area of $$19\frac14$$ units².