Grouping Expressions

• To add 5 to the result

• To indicate that 2 and 3 should be multiplied first

• To indicate that 2 and 3 should be added first

• To divide the result by 5

• The operation inside the brackets should be done last

• The operation inside the brackets should be done first

• The operation inside the brackets should be ignored

• The operation inside the brackets should be multiplied by 7

• The subtraction should be done first

• The addition should be done first

• The entire expression should be multiplied by 2

• The entire expression should be divided by 2

• The operation inside the brackets should be done first

• The operation inside the brackets should be done last

• The operation inside the brackets should be ignored

• The operation inside the brackets should be added to 10

• The multiplication should be done first

• The addition should be done first

• The subtraction should be done first

• The entire expression should be divided by 9

• To multiply 8 by the result

• To indicate that 2 and 3 should be added first

• To indicate that 2 and 3 should be multiplied first

• To divide the result by 8

Using the steps shown, Heather tried to simplify this expression. What was her first mistake?

• Step 1

• Step 2

• Step 3

• Step 4

How should parentheses be placed in this expression to represent a value of 82?

• (7 x 8) + 4 - 2

• (7 x 8) + (4 - 2)

• 7 x (8 + 4) - 2

• 7 x 8 + (4 - 2)

Solve.

• 96

• 137

• 145

• 280