Math 7 Chapter 1 Quizizz Practice

What property allows this statement to be true? 
AB = BA

• Associative 
• Distributive
• Commutative

What property allows this statement to be true? 
(A + B) + C = A + ( B + C)

• Associative
• Commutative
• Distributive

Find an equivalent expression using the associative property:
7 + ( 8 + 9)

• 7 + 8 + 9
• 8 + ( 7 + 9)
• (7 + 8 ) + 9
• 7 + 10

Name the property: 
1 ^_x 12 =12

• Identity Property of Multiplication
• Commutative Property of Multiplication
• Multiplication Property of One
• Distributive Property

Name the property:
9 + 0 = 9

• Identity Property of Multiplication
• Associative Property of Addition
• Identity Property of Addition
• Additive Inverse Property

Which of these are like terms in the following expression:
3x + 7 - 9x + 24y + 2x²

• 7, 24y
• 3x, 9x
• 3x, -9x
• 3x, -9x, 2x²

Simplify by combining like terms:
5a + 2b - 3a + 4

• 8a + 2b + 4
• 2a + 2b + 4
• 8ab
• 4ab + 4

Combine the like terms in the expression 3x + 2x - 5.

• 5x

• 7x - 5

• x^2

• 10x

Answer explanation

To combine like terms, add the coefficients of x. In this case, 3x + 2x = 5x. The constant term -5 remains unchanged. Therefore, the expression simplifies to 5x - 5. Thus, the correct choice is 5x.

Simplify the expression 3x + 4y - 2x + 5y.

• x + 9y

• 5x + 9y

• x + y

• 5x + y

Answer explanation

To simplify the expression 3x + 4y - 2x + 5y, combine like terms. The x terms combine to give x, and the y terms combine to give 9y. Therefore, the simplified expression is x + 9y. This matches the correct choice, x + 9y.

3(4+3r)

• 12+9r
• 7+6r
• 12+5r