Exploring Rational Numbers in Big Ideas Math

What must you remember when adding fractions?

• You need a common denominator.

• You need to line up the decimal points.

• You need to subtract the numerators.

• You need to multiply the denominators.

When adding positive numbers on a number line, which direction do you move?

• Left

• Right

• Up

• Down

What is the result of adding 3/5 and -1/5 on a number line?

• 0

• 1/5

• 4/5

• 2/5

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

• Subtract the numerator from the denominator.

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

• Add the numerator and denominator.

• Divide the numerator by the whole number.

What is the common denominator for 3/4 and 8/9?

• 36

• 45

• 12

• 27

When adding decimals, what must you ensure?

• The fractions are improper.

• The numerators are the same.

• The denominators are the same.

• The decimal points are lined up.

What is the result of adding -3.89 and -5.34?

• -7.23

• -8.23

• -9.23

• -6.23

What is the result of 6.91 + (-8.7)?

• 2.79

• -2.79

• 1.79

• -1.79

What property allows you to rearrange terms in an addition problem?

• Associative Property

• Distributive Property

• Commutative Property

• Identity Property

What is the total profit or loss over a five-year period if the profits are -2.5, 0.75, 2.7, 0.6, and 3.4 million dollars?

• -1.75 million

• 1.75 million

• -0.75 million

• 0.75 million