Math Expressions

Shelley is going to buy 3 hair bows that cost $1.25 each and 4 barrettes that are $1.50 each. Which number sentence can be used to find b, the total cost of 3 hair bows and 4 barrettes? Choose the correct number model.

• 3(1.25) + 4(1.50) = b

• 3(4) + (1.25 + 1.50) = b

• 4(1.50) + 3(1.25) = b

• (1.50 + 1.25) + 3 + 4) = b

Select the correct expression. Katie has 5 pink pencils and 7 green pencils. How many does she have?

• 5 + 7

• 5 x 7

• 7 - 5

• 7 / 5

Brody has 5 boxes of erasers. Each box has 7 erasers. How many erasers does her have? Choose the correct expression.

• 5 + 7

• 5 x 7

• 7 - 5

• 7 / 5

Kendra has 12 dolls. She puts them evenly on 2 shelves. How many are on each shelf? Choose the correct expression.

• 12 + 2

• 12 - 2

• 12 x 2

• 12 / 2

Kathleen has $12. She spends $2 on popcorn. How much does she have left? Choose the correct expression.

• 12 + 2

• 12 - 2

• 12 x 2

• 12 / 2

Mrs. Deckebach and Mrs. Kacher each have two bagels. How many bagels do they have together? Choose the correct number sentence.

• 2-2=0

• 2+2=4

• 2+2+2 = 6

• 2+2=5

Reese and Matei had 13 pizzas. 7 of them were mushroom and bacon. The rest were pepperoni. How many pizzas are pepperoni? Choose the correct number sentence.

• 13-7=30

• 13+7=20

• 13+7=6

• 13-7=6

Tyler spent $4.86 for lunch and $7.83 for supper. He had $8.35 left at the end of the day. Which number sentence can be used to find m, how much money Tyler had before lunch? Choose the correct number model.

• 4.86 + 7.83 + 8.35 = m

• (4.86 + 7.83) - 8.35 = m

• (4.86 + 7.83) x 8.35 = m

• 8.35 - (4.86 + 7.83) = m

In September there were 21 students in Jean's class. 2 students moved away in October. In November, 3 new students joined the class. Which number model could be used to find s, the number of students in Jean's class?

• (21 + 2) + 3 = s

• 21 - (2 + 3) = s

• (21 - 2) + 3 = s

• 21 + ( 2 - 3) = s

Which expression matches:
The sum of 6 and 5 doubled

• 2 x 6 + 5

• 2 x (6 + 5)

• 6 + (5 x 2)