Binary Operations

Binary Operations

Pre-Test

Multiple Choice

1.)If a@b means ab/a - b. Find the respective values for the operation (i). 5@4. (ii). 4@5.

• 20 & -9

• 20 & -20

• 9 & -9

• 20 & 20

Multiple Choice

2.)If a*b means (a-b)². State whether (5*2)*4 is associative or not by selecting the correct example.

• (5*2)*4 ≠ 4

• (5*2)*4 = 1

• (5*2)*4 = 5*(2*4)

• (5*2)*4 ≠ 1

Multiple Choice

3.) Which of the following is the commutative property of multiplication?

• ab = ba

• ab = ac

• a (bc) = (ab)c

• a (b + c) = ab + ac

Multiple Choice

4. Express (9@6)@5 using the associative property.

• 9@6@5

• (5@6)@9

• 9@(6@5)

• 6@(5@9)

Multiple Choice

5. Which property of addition is shown?

(g + h) + j = g + (h + j)

• Associative Property of Addition

• Commutative Property of Addition

• Binary Operations on Addition

• Distributive Property

Multiple Choice

6.) The commutative property of multiplication states that the order of the numbers in an equation:

• Is very important

• Should go from least to greatest

• Should go from the greatest to least

• Doesn't change the product at all

Multiple Choice

7.)Which is an example of the commutative property of multiplication?

• 3 x 4 = 4 x 3

• 3 x 4 = 3 x 4

• 4 x 3 = 4 x 3

• 3 + 4 = 4 + 3