operations on rational numbers

Front

What is a rational number?

Back

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

Tags

CCSS.5.NBT.A.2

Front

How do you perform addition on rational numbers?

Back

To add rational numbers, convert them to a common denominator, add the numerators, and simplify the result if necessary.

Tags

CCSS.7.NS.A.1C

Front

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

Back

Subtracting a negative number is equivalent to adding its absolute value.

Tags

CCSS.7.NS.A.1C

Front

How do you multiply two rational numbers?

Back

To multiply rational numbers, multiply the numerators together and the denominators together, then simplify the result.

Tags

CCSS.7.NS.A.2C

Front

What is the product of a negative number and a positive number?

Back

The product of a negative number and a positive number is always negative.

Tags

CCSS.7.NS.A.2A

CCSS.7.NS.A.2B

Front

How do you find the distance between two points on a number line?

Back

The distance between two points on a number line is found by taking the absolute value of the difference between the two numbers.

Tags

CCSS.7.NS.A.1C

Front

What is the significance of zero in multiplication?

Back

Any number multiplied by zero equals zero.

Tags

CCSS.3.OA.B.5

Front

How do you represent a decrease in temperature mathematically?

Back

A decrease in temperature can be represented by subtracting a positive number from the initial temperature.

Tags

CCSS.7.NS.A.1C

Front

What is the formula for finding the remaining quantity after sales?

Back

Remaining quantity = Initial quantity - Sold quantity.

Tags

CCSS.6.NS.B.3

Front

What does it mean for a product to be negative?

Back

A product is negative if it is the result of multiplying an odd number of negative factors.

Tags

CCSS.7.NS.A.2A