# Solve multistep real-life and mathematical problems posed with positive and negative rational numbers in any form (whole numbers, fractions, and decimals), using tools strategically. Apply properties of operations to calculate with numbers in any form, convert between forms as appropriate, and assess the reasonableness of answers using mental computation and estimation strategies.

Examples:
• If a woman making \$25 and hour gets a 10% raise, she will make and additional 1/10 of her salary an hour, or \$2.50, for a new salary of \$27.50.
• If you want to place a towel bar 9 3/4 inches long in the center of a door that is 27 1/2 inches wide, you will need to place the bar about 9 inches from each edge: this estimate can be used as a check on the exact computation.

ACOS 2009 Correlation
• 1 - Demonstrate computational fluency with addition, subtraction, multiplication, and division of integers.
• 2 - Use order of operations to evaluate numerical expressions.
• 3 - Solve problems requiring the use of addition, subtraction, multiplication, and division on rational numbers.
• 3.2 - Determining the reasonableness of the answer to a problem.
• 3.3 - Using percents to solve problems, including problems involving discounts, taxes, commissions, and simple interest.
• 6 - Solve one- and two-step equations.

CMP2 Correlation
 Book Investigation Objective Accentuate the Negative 1-4 7-EE3 Variables & Patterns 2-4 7-EE3 Moving Straight Ahead 1-4 7-EE3 All of CMP addresses this objective.

Resources

North Carolina's Lessons for Learning

Number Tricks - 7EE3, 7EE1, 7EE4
• I can connect order of operations to the decomposition of a multi-step equation.
• I can solve multi-step equations.
• I can translate words into mathematical expressions.
• I can translate mathematical expressions into words.

My Humble Opinion
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