Patterns and Expressions Flashcards

Grade 5 · Math · Flashcards

Review patterns, variables, and evaluating expressions.

Flashcards

Pattern: A sequence that follows a rule; each term is related to the previous one in the same way.
Variable: A letter like n or x that represents an unknown or changing number.
Expression: A math phrase with numbers, operations, and variables but no = sign. Example: 3n + 2.
Evaluate an expression: Replace the variable with a given number and calculate. E.g., n + 5 when n=4: 4+5=9.
Rule for 2, 5, 8, 11, 14...: Add 3 each time.
Rule for 3, 6, 12, 24, 48...: Multiply by 2 each time.
3n when n = 8: 24 (3 × 8 = 24)
n - 4 when n = 10: 6 (10 - 4 = 6)
What are perfect squares?: Numbers that result from multiplying a whole number by itself: 1, 4, 9, 16, 25, 36...
What is a term in a pattern?: Each individual number or element in the sequence.