Navigating the Addition and Subtraction of Rational Numbers

What are rational numbers?

• Numbers that are always whole numbers.

• Numbers that are always positive.

• Numbers that go on forever without repeating.

• Numbers that can be written as fractions or decimals.

Which of the following is a rational number?

• √2 (square root of 2)

• π (pi)

• 1.5

• Avogadro's number

What is 1/5 + 2/5?

• 4/5

• 3/5

• 2/5

• 1/5

What is the common denominator for 1/2 and 2/5?

• 5

• 10

• 20

• 2

How many tenths is 1/2 equivalent to?

• 6/10

• 5/10

• 4/10

• 2/10

What is 1/2 + 2/5 when converted to a common denominator?

• 13/10

• 9/10

• 11/10

• 7/10

What is the smallest common denominator for 20 and 5?

• 100

• 5

• 10

• 20

What is 13/20 - 8/20?

• 1/20

• 5/20

• 7/20

• 9/20

How many times does 6 go into 7?

• 1 time

• 2 times

• 3 times

• 4 times

What is the result of adding -2.90 and -13.40?

• -16.30

• -15.30

• -14.30

• -17.30