8th Math STAAR Prep: Series 1 & 6: page 1

Front

What is the formula for calculating simple interest?

Back

Simple Interest (I) = Principal (P) × Rate (R) × Time (T) where Rate is in decimal form.

Front

What does it mean for two figures to be proportional?

Back

Two figures are proportional if their corresponding side lengths have the same ratio.

Front

How do you find the width of a recycling bin if two panels meet at a right angle?

Back

Use the Pythagorean theorem if the dimensions are known, or use given measurements directly.

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Back

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Front

What is a dilation in geometry?

Back

A dilation is a transformation that alters the size of a figure but keeps its shape.

Front

What is the relationship between congruent and proportional figures?

Back

Congruent figures are identical in shape and size, while proportional figures have the same shape but may differ in size.

Front

How do you calculate the total amount of interest earned on a deposit?

Back

Multiply the principal by the rate and the time: Total Interest = P × R × T.

Front

What is the significance of a right angle in geometry?

Back

A right angle measures 90 degrees and is fundamental in defining perpendicular lines.

Front

What does it mean for a variable to vary directly with another variable?

Back