This document provides two steps to solve multi-step ratio and percent problems: 1) Estimate and compute the unit cost of consumables sold in quantity to make purchase decisions based on cost and practicality. 2) Solve problems involving percent of a number, discounts, taxes, simple interest, percent increase, and percent decrease using proportional relationships. The tools needed are a pencil, paper, and calculator.

1. i. Estimate and compute
unit cost of consumables
(to include unit
conversions if necessary)
sold in quantity to make
purchase decisions based
on cost and practicality
d. Use proportional relationships (PFL)
to solve multistep ratio and ii. Solve problems
percent problems.4 (CCSS: involving percent of a
7.RP.3) number, discounts, taxes,
simple interest, percent
increase, and percent
decrease (PFL)

2. Pencil, Paper, Calculator