Real Numbers Answers

Choose all sets that contain the number –2.22.

Choose all sets that contain the number 5.

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 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.

a + = 0.

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

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

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 “the product of a number and five is two less than the number.”