Real Numbers Answers

Choose all sets that contain the number –2.22.

Choose all sets that contain the number 5.

Select all of the following statements that are true.

Which answer choice has the set of numbers ordered correctly from least to greatest?

Which set is closed under subtraction?

Which answer choice shows that the set of irrational numbers is not closed under addition?

The following examples illustrate the associative property of addition. (5 + 2) + 3 = 5 + (2 + 3) 3.5 + (1.2 + 9.6) = (3.5 + 1.2) + 9.6Study the examples, then choose the statement that best describes the property.

The following examples illustrate the associative property of multiplication.(5 · 3) · 6 = 5 · (3 · 6)2 · (1.1 · 0.1) = (2 · 1.1) · 0.1 Study the examples, then choose the statement that best describes the property.

The following examples illustrate the commutative property of addition. 7 + 8 + 3 = 7 + 3 + 8 4.6 + 11.4 = 11.4 + 4.6Study the examples, then choose the statement that best describes the property.

The following examples illustrate the commutative property of multiplication.5 · 2 · 9 = 2 · 5 · 9 · 2 = 2 · Study the examples, then choose the statement that best describes the property.

a + = 0.

Inverse property of multiplication: For all real numbers except , a • = 1.

Inverse property of multiplication: For all real numbers except , a • = 1.

Choose the expression that represents “three less than seven times a number.”

Choose the expression that represents “the product of a number and five is two less than the number.”

Write the expression – 5x(4 + 3x) using words.