7th Grade Semester One Final

Front

What is the result of 8 + (-9)?

Back

The result is -1, which is negative.

Front

How do you determine if the sum of two numbers is positive or negative?

Back

Compare the absolute values of the numbers; the one with the largest absolute value determines the sign.

Front

What is -6 - 2 in terms of number line representation?

Back

It represents -8 on the number line.

Front

If the scale is 1in = 7ft, how do you convert actual feet to inches?

Back

Multiply the actual feet by the scale factor (1in/7ft).

Front

What is the length of side s if it is missing and the answer is 7.5?

Back

s = 7.5.

Front

What do similar triangles have in common regarding their sides?

Back

Their corresponding sides are in proportion.

Front

If a backyard is 49 ft wide, how wide is it in a drawing with a scale of 1in = 7ft?

Back

The width in the drawing is 7 inches.

Front

What does it mean for two sides to correspond in similar triangles?

Back

It means they are proportional to each other.

Front

What is the absolute value of a number?

Back

The absolute value is the distance of a number from zero on the number line, regardless of direction.

Front

How do you find the missing side of a triangle using the Pythagorean theorem?

Back

Use the formula a² + b² = c², where c is the hypotenuse.