Numerical Expressions with Parentheses

What does the P in PEMDAS stand for?

• Parrot

• Parentheses

• Potato

• Peace

When interpreting numerical expressions, my parentheses go around the _______________ words.

• Answer (sum, difference, quotient, product)

• Shortest

• Longest

• Multiplication

When you have parentheses inside of parentheses, start with your innermost parentheses. Which operation would be first in the following?

• 3 x 4

• 3 x 7

• 3 + 7

• 4 + 7

to multiply the term outside the parenthesis to all terms inside the parenthesis
a(b+c)= a(b)+a(c) and a(b-c)= a(b)-a(c)

• Commutative Property of Multiplication

• Distributive Property

What do these parentheses indicate in the expression?

• The parentheses indicate that 6 + 4 should be solved last

• The parentheses indicate that 6 + 4 should be solved first.

• The parentheses indicate that 80 ÷ 10 should be solved first.

• The parentheses indicate that 80 + 6 should be solved first.

Which statement is true about the parentheses in this expression? 100 ÷ 20 + 7(84 – 6)

• The parentheses indicate that 7 × 84 should be solved last.

• The parentheses indicate that 100 ÷ 20 should be solved first.

• The parentheses indicate that 84 – 6 should be solved first

• The parentheses indicate that 20 + 7 should be solved first.

Which of the following has the parentheses placed properly to have an answer of 6?

• (32 + 16) ÷ 8

• 32 + (16 ÷ 8)

• 32 + 16 ÷ 8

• (32 + 16 ÷ 8)

Which statement is true about the parentheses in this expression? 78 – [3(27 ÷ 9)]

• The parentheses indicate that 27 ÷ 9 should be solved first

• The parentheses indicate that 27 ÷ 9 should be solved last

• The parentheses indicate that 3 × 3 should be solved first

• The parentheses indicate that 78 – 3 should be solved last.

Choose an expression for:

4 times the difference between 26.8 and 23.7

Solve:

11²-(12-4)²+3

• 30

• 40

• 50

• 60