Parenthesis Power
Which part of the expression 2 + (3 × 4) do you solve first?
3 x 4
Which operation comes first when moving left to right: multiplication or addition?
Multiplication
Solve: 10 - 3 + 2
9
Jenna has 3 packs of stickers. Each pack has 4 stickers. How many stickers total? Write an expression and evaluate.
3 × 4 = 12
Leo solved 5 + 3 × 2 and got 16. What did he do wrong?
He added 5 + 3 first instead of multiplying 3 × 2 first
Solve: (6 + 2) × 3
24
Solve: 12 ÷ 3 × 2
8
20 + 5 - 8
A baker makes 2 boxes with 5 cupcakes each, then adds 3 more cupcakes on the side. Write and solve an expression.
(2 × 5) + 3 = 10 + 3 = 13
What is the correct answer to Leo's problem: 5 + 3 × 2?
11
True or False: In the expression (10 - 4) + 5, you subtract before you add.
True
Solve: 5 × 4 ÷ 2
10
In the problem 15 - 4 + 1, do you add or subtract first?
Subtract, because it is on the left and with addition and subtraction we work left to right
Sam reads 4 pages per day for 3 days, then reads 2 extra pages on the last day. Write an expression and solve.
(4 × 3) + 2 = 12 + 2 = 14
Mia solved (10 - 2) × 4 by doing 10 - 8. What did she do wrong?
She multiplied 2 × 4 before finishing inside the parentheses properly, or she miscalculated inside the parentheses
Solve: 5 × (2 + 3)
25
True or False: Division always comes before multiplication.
False — they are solved left to right as they appear
30 - (10 + 5)
15
A class has 5 rows of chairs with 6 chairs each. They remove 4 chairs. Write the expression and solve.
(5 × 6) - 4 = 30 - 4 = 26
Find the error: For 12 ÷ 4 + 2, Sam added 4 + 2 = 6, then did 12 ÷ 6 = 2. What should he have done?
Divided 12 ÷ 4 = 3, then added 2 to get 5
Where do you put the parentheses in 4 + 2 × 3 to make the answer 18?
(4 + 2) × 3
Solve: (15 ÷ 3) + (2 × 4)
13
8 + 12 - 4 × 2
12
Lina buys 3 packs of pencils. Each pack has 8 pencils. She gives 5 pencils to a friend. Write and solve the expression.
(3 × 8) - 5 = 24 - 5 = 19
Rewrite 4 + 6 × 2 - 3 step-by-step showing the correct order.
Multiply 6 × 2 = 12; then 4 + 12 - 3; then 16 - 3 = 13