Real Numbers Answers

Choose all sets that contain the number –2.22.

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.

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

Select all of the following statements that are true.

Which set is closed under subtraction?

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 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.

a + = 0.

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

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

Choose all sets that contain the number 5.

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.

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

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