Examples, solutions, videos, and lessons to help Grade 6 students learn to write, read, and evaluate expressions in which letters stand for numbers.
A. Write expressions that record operations with numbers and with letters standing for numbers. *For example, express the calculation “Subtract y from 5” as 5 – y
B. Identify parts of an expression using mathematical terms (sum, term, product, factor, quotient, coefficient); view one or more parts of an expression as a single entity. For example, describe the expression 2 (8 + 7) as a product of two factors; view (8 + 7) as both a single entity and a sum of two terms.
C. Evaluate expressions at specific values of their variables. Include expressions that arise from formulas used in real-world problems. Perform arithmetic operations, including those involving whole-number exponents, in the conventional order when there are no parentheses to specify a particular order (Order of Operations). For example, use the formulas V = s3 and A = 6 s2 to find the volume and surface area of a cube with sides of length s = 1/2.
Common Core: 6.EE.2
Write, read, and evaluate expressions in which letters stand for numbers (6.EE.2a)
Writing Expressions (6.EE.2)
Turning Words into Math
6.EE.2.a - From Words to Expressions (Less than and Difference)
Translate from words to algebraic expressions.
Identifying Parts of Expressions (6.EE 2)
Term: A part of an expression, a number, variable (or numbers and variables multiplies by each other) separated by addition of subtraction from other terms.
Coefficient: The number multiplied by a variable.
Evaluating Expressions and Order of Operations (6.EE.2)
Using formulas to evaluate.
V = lwh Find the volume of 5 of these rectangular prisms that each have l = 3 cm, w = 2 cm and h = 4 cm.
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