Math Games

Grade 5 - Patterning and Algebra

Standard 5.PA.2 - Practice evaluating variable expressions with whole numbers.

Included Skills:

Variables, Expressions, and Equations
• demonstrate, through investigation, an understanding of variables as changing quantities, given equations with letters or other symbols that describe relationships involving simple rates (e.g., the equations C = 3 x n and 3 x n = C both represent the relationship between the total cost (C), in dollars, and the number of sandwiches purchased (n), when each sandwich costs $3);
• demonstrate, through investigation, an understanding of variables as unknown quantities represented by a letter or other symbol (e.g., 12 = 5 + __ or 12 = 5 + s can be used to represent the following situation: "I have 12 stamps altogether and 5 of them are from Canada. How many are from other countries?");
• determine the missing number in equations involving addition, subtraction, multiplication, or division and one- or two-digit numbers, using a variety of tools and strategies (e.g., modelling with concrete materials, using guess and check with and without the aid of a calculator) (Sample problem: What is the missing number in the equation 8 = 88 � __?).