7th Grade Math Unit 1

Front

What is the value of -3 on a number line?

Back

-3 is a point located three units to the left of zero on a number line.

Front

What is the absolute value of -8?

Back

The absolute value of -8 is 8, which is the distance from zero on the number line.

Front

If the temperature is -5°F and it rises by 20 degrees, what is the new temperature?

Back

The new temperature is 15°F (calculated as -5 + 20 = 15).

Front

Evaluate the expression -5 * (-8).

Back

The result is 40, because multiplying two negative numbers results in a positive number.

Front

If the temperature was 9°F and it rose by 16 degrees, what was the temperature before the rise?

Back

The temperature before the rise was -7°F (calculated as 9 - 16 = -7).

Front

What is the definition of a negative number?

Back

A negative number is a number that is less than zero, represented with a minus sign (-).

Front

What does it mean to evaluate an expression?

Back

To evaluate an expression means to calculate its value by performing the operations indicated.

Front

What is the formula for finding the absolute value of a number?

Back

The absolute value of a number x is defined as |x|, which equals x if x is positive or 0, and -x if x is negative.

Front

How do you add two negative numbers?

Back

When adding two negative numbers, you add their absolute values and keep the negative sign.

Front

What is the result of -|-8|?

Back

The result is -8, because the absolute value of -8 is 8, and the negative sign in front makes it -8.