Adding Rational Numbers: A Comprehensive Guide

What is a rational number?

• A number that can only be positive

• A number that can be written as a fraction or decimal

• A number that is always an integer

• A number that cannot be negative

Which of the following is a rational number?

• √2

• π

• 1.5

• e

When adding decimals, what is the most important rule to remember?

• Convert them to fractions first

• Ignore the decimal points

• Line up the decimal points

• Always round to the nearest whole number

If you have -5 and add 2, where do you end up on the number line?

• -7

• -3

• 7

• 3

In the example problem, what is the result of -523.2 + 57.93?

• 581.13

• -581.13

• 465.27

• -465.27

What must be true for fractions before you can add or subtract them?

• They must be improper fractions

• They must have a common denominator

• They must be positive

• They must have the same numerator

How do you convert a mixed number to an improper fraction?

• Add the numerator to the denominator

• Multiply the whole number by the denominator and add the numerator

• Divide the numerator by the denominator

• Subtract the numerator from the whole number

What is the common denominator for the fractions 1/2 and 1/3?

• 6

• 5

• 3

• 2

What is the result of adding -3/2 and 10/3?

• 1/6

• -11/6

• 11/6

• -1/6

How do you simplify the fraction 11/6?

• 2 5/6

• 1 1/5

• 2 1/6

• 1 5/6