Adding Parentheses to Expressions

Analyze the expression: 3 x 5 + 2 = 21 Add parentheses to make the expression TRUE.

• (3 x 5) + 2 = 21

• 4 x (5 + 2) = 21

• 3 x (5 + 2) = 21

• 3 x {2 + 6} = 21

Analyze the expression:

32 - 2 x 3 + 6 = 14

Add parentheses to make the expression TRUE.

• (32 - 2) x 3 + 6 = 14

• 32 - (2 x 3) + 6 = 14

• 2 x (32 - 6) + 3 = 14

• 32 - 2 x (3 + 6) = 14

Add parentheses to make the expression TRUE.

12 x 2 + 4 = 72

• (2 x 2) + 4 = 72

• 12 x (2 + 4) = 72

• (12 x 2 + 4) = 72

Add parentheses to make the expression TRUE.

7 + 4 x 12 - 8 = 23

• 7 + 4 x (12 - 8) = 23

• (7 + 4) x 12 - 8 = 23

• 7 + (4 x 12) - 8 = 23

• (17 + 4) x 12 - 8 = 23

Add parentheses to make the expression TRUE.

3 x 3 - 4 + 5 = 0

• (3 x 3) - 4 + 5 = 0

• (13 x 5) + 5 = 0

• (3 x 3 - 4) + 5 = 0

• 3 x 3 - (4 + 5) = 0

Add parentheses to the expression to make it TRUE.

15 + 4 x 7 - 5 = 128

• 15 + 4 x (7 - 5) = 128

• 15 + (4 x 7) - 5 = 128

• (15 + 4) x 7 - 5 = 128

• 15 + 4 x 7 - 5 = 128

The parentheses in this expression makes it TRUE.

24 / (2 x 3) = 4

• True

• False

Add parentheses to make the expressions TRUE.

12 x 2 + 4 = 72

• (12 x 2) + 4 = 62

• 12 x (2 + 4) = 72

• 12 x (2 + 4) = 70

• 12 x (2 + 4) = 68

Add parentheses to the expression to make it TRUE.

24 - 4 x 2 + 2 = 42

• (24 - 4 x 2) + 2 = 42

• 24 - (4 x 2) + 2 = 42

• (24 - 4) x 2 + 2 = 42

• 24 - 4 x (2 + 2) = 42

Add parentheses to the expression to make it TRUE.

5 x (5 - 3) x 6 = 60

• 5 x 5 - (3 x 6) = 60

• (5 x 5) - 3 x 6 = 60

• 5 x (5 - 3) x 6 = 60

• 5 x (5 - 3 x 6) = 60