Diagnostic Algebra and Algebraic Thinking Flashcards
7 cards from real i-Ready Diagnostic Test practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Diagnostic Algebra and Algebraic Thinking flashcards as text
A store sells notebooks for $3 each. Which equation represents the total cost (C) for n notebooks?
Answer: C = 3n
Multiplying the price per notebook by the number of notebooks gives total cost: C = 3n.
What is the value of x in the equation 4x − 6 = 18?
Answer: 6
Adding 6 to both sides gives 4x = 24, then dividing by 4 gives x = 6.
Which expression is equivalent to 5(x + 4)?
Answer: 5x + 20
Distributing 5 to each term inside the parentheses gives 5x + 20.
The rule for a pattern is 'multiply by 3 and subtract 1.' If the input is 5, what is the output?
Answer: 14
5 × 3 = 15, then 15 − 1 = 14.
Which inequality represents 'a number y is at most 12'?
Answer: y ≤ 12
'At most 12' means y can equal 12 or be less, so y ≤ 12.
If f(x) = 2x + 7, what is f(4)?
Answer: 15
Substituting x = 4: 2(4) + 7 = 8 + 7 = 15.
A sequence starts: 2, 6, 18, 54, … What is the next term?
Answer: 162
Each term is multiplied by 3; 54 × 3 = 162.
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