Writing Multi-Step Expressions from Verbal Phrases
Writing Multi-Step Expressions from Verbal Phrases is a Grade 5 math skill in Eureka Math, Chapter 26: Interpretation of Numerical Expressions, where students translate complex verbal descriptions involving multiple operations into numerical expressions with correct use of parentheses and operation symbols. This skill develops the algebraic literacy needed for middle school pre-algebra.
Key Concepts
To write an expression from words or a diagram, identify the quantities and the operations (addition, subtraction, multiplication, division). Use parentheses ( ) to group parts of the expression that are calculated first, as described by the phrase.
Common Questions
How do you write a multi-step expression from a verbal phrase?
Break the phrase into operations in the order they are described, identify which operations must be grouped with parentheses, and write the expression step by step. For example, add 5 and 3 then multiply by 4 becomes (5 + 3) x 4.
What key words indicate which operation to use?
Sum, total, and more than indicate addition; difference and less than indicate subtraction; product and times indicate multiplication; quotient and divided by indicate division.
How do grouping words like the sum of affect expression writing?
Grouping words signal that the grouped operation should be placed inside parentheses before the outer operation is applied, changing the evaluation order.
What is Eureka Math Grade 5 Chapter 26 about?
Chapter 26 focuses on Interpretation of Numerical Expressions, helping students translate between verbal descriptions and numerical notation using parentheses and the order of operations.