Math Checkpoint: Rational Numbers & Integer Operations

Front

What is an absolute value?

Back

The absolute value of a number is its distance from zero on the number line, regardless of direction. For example, |-5| = 5.

Front

How do you find the difference between two temperatures, one negative and one positive?

Back

To find the difference, subtract the lower temperature from the higher temperature. For example, the difference between -5°F and 5°F is |5 - (-5)| = 10.

Front

What is the sum of 2 and -6?

Back

2 + (-6) = -4.

Front

How do you arrange numbers on a number line?

Back

To arrange numbers on a number line, place them in order from least to greatest based on their value. For example, -3, -1.5, 0, 2.5.

Front

What is the result of subtracting a negative number from a positive number?

Back

Subtracting a negative number is the same as adding its positive counterpart. For example, 6 - (-4) = 6 + 4 = 10.

Front

Which number is closest to zero: -2, -0.5, 0.75, or -1?

Back

-0.5 is closest to zero.

Front

What is a rational number?

Back

A rational number is any number that can be expressed as a fraction or ratio of two integers, where the denominator is not zero.

Front

How do you add two rational numbers with different signs?

Back

When adding two rational numbers with different signs, subtract the smaller absolute value from the larger absolute value and keep the sign of the number with the larger absolute value.

Front

What is the result of adding two negative numbers?

Back

The sum of two negative numbers is always negative. For example, -4 + (-3) = -7.

Front

What is the result of adding a positive number and a negative number?

Back

The result depends on the absolute values. If the positive number is larger, the result is positive; if the negative number is larger, the result is negative.