Substitution and Order of Operations

5-(7+3)÷2

• 0

• -5

• 5

• 6

6·5-(4+2)÷2

• 60

• 24

• 27

• 12

8+5∙4+(7-3)

• 32

• 23

• 25

• 12

(15 ÷ 3)² + 9 ÷ 3

• 11.3

• 28

• 13

Evaluate 2x + 5y - 4 when x = 11 and y = 3

Mathematical Equivalence

ON

Evaluate 8.7j – 9.8k when j = 7 and k = 4.

Mathematical Equivalence

ON

Answer explanation

Evaluate 8.7j – 9.8k when j = 7 and k = 4.

First, substitute for j and k:

8.7(7) - 9.8(4) then multiply.

60.9 - 39.2 and finally subtract

21.7

Tags

CCSS.MATH.CONTENT.7.EE.B.4.a

What is the value of 2a - 3b + 6 when a = 2 and b = -5?

Mathematical Equivalence

ON

Which operation would you do first in the following equation?

10 - 4 ÷ 1 x 5

• Subtraction

• Division

• Multiplication

• Addition

Evaluate the expression. Let g = 3 h = 9

4g + 2h + 4

Mathematical Equivalence

ON

Simplify:

-8 ( -3 + -10 ) + (-5)

• 109

• 99

• -109

• -99