7th Grade Math Semester 1 Review

Front

What is an integer?

Back

An integer is a whole number that can be positive, negative, or zero, but does not include fractions or decimals.

Front

What does absolute value mean?

Back

The absolute value of a number is its distance from zero on the number line, regardless of direction. For example, the absolute value of -6 is 6.

Front

How do you add two negative integers?

Back

When adding two negative integers, you add their absolute values and keep the negative sign. For example, -45 + -5 = -50.

Front

What is the result of -6xy - 8x when factored?

Back

The expression -6xy - 8x can be factored as -2x(3y + 4).

Front

How do you find the temperature after a drop?

Back

To find the new temperature after a drop, subtract the drop from the original temperature. For example, if the temperature is -14°F and it drops 7°F, the new temperature is -14 - 7 = -21°F.

Front

What is the relationship between -6 and 6 in terms of absolute value?

Back

The absolute value of -6 is equal to the absolute value of 6, both are 6.

Front

What does it mean for a number to be below sea level?

Back

A number below sea level is represented as a negative integer, indicating depth. For example, -180 ft means 180 feet below sea level.

Front

How do you represent a temperature drop in integers?

Back

A temperature drop is represented by subtracting a positive integer from the current temperature, resulting in a lower (more negative) integer.

Front

What is the sum of -30 and -130?

Back

The sum of -30 and -130 is -160.

Front

What is the product of two negative integers?

Back

The product of two negative integers is a positive integer. For example, -2 * -3 = 6.