Numerical Expressions Review

Which operation should be performed first when simplifying this expression?

• 40/5, because it is the first operation when reading left to right

• 5 + 3, because the operation in the parentheses should be performed first

• 3 x 8, because multiplication should be performed before addition

• 8 + 1, because it is the first operation when reading right to left

Jacob wrote the expressions shown. What do these parentheses indicate in the expression?

• Divide 10 by 5 before adding 4

• Multiply 4 by 72 before subtracting 6

• Add 5 and 4 together before subtracting 6 from 72

• Subtract 6 from 72 before multiplying by 4

An expression is given. What is the value of this expression?

• 294

• 144

• 408

• 168

What is the value of this expression?

• 14

• 34

• 50

• 70

Which expression has a value of 25?

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Kassidy walks and bathes dogs. She charges $8.50 if a customer wants a dog bathed and walked. She charges $5.75 if a customer only wants a dog walked. The list shows the jobs Kassidy did last weekend.

On Saturday she took 6 dogs for walks only.

On Sunday she took 5 dogs for walks only.

On Saturday she walked and bathed 4 dogs.

On Sunday she walked and bathed 4 dogs.

Kassidy used an expression to determine the amount of money she earned walking and bathing dogs last weekend. How much money did Kassidy earn walking and bathing dogs last weekend?

• $97.25

• $1,411.00

• $194.50

• $131.25

Rebecca bought air filters at a store.

She bought 8 air filters.

Each air filter cost $16.95.

Rebecca used a coupon for $7.50 off her total cost of the air filters.

The total cost in dollars that Rebecca paid for these 8 air filters can be represented by this expression. How much did Rebecca pay for these 8 air filters? (Do not include the money symbol)

Which expression does NOT have a value of 24?

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A teacher has some pencils in a bag and some in boxes.

She has a bag with 36 unbroken pencils.

She has 4 boxes with 120 pencils in each box.

There are 6 broken pencils in each box.

She puts half of all the unbroken pencils in a storage cabinet.

Which expression can be used to show that the teacher puts 246 pencils in the storage cabinet?

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Simplify the expression shown.