Unit Seven Study Guide Pt. 1

Which step should be solved first in the following expression? [13 + (9 ÷ 3) - 6] × 12?

• 13 + 9

• 9 ÷ 3

• 3 – 6

• 6 x 12

An expression is shown below. [25 - 3 × 4 + (6 ÷ 2)] What value is equivalent to this expression?

• 10

• 91

• 16

• 47

Dominic saved his money to buy four new toy cars for his little brother. He had $15 from his birthday, and he saved $2.30 each week from his earnings for doing chores. The amount of money that each toy car cost is represented by the expression below. \[ [15 + 4(2.30)] \div 4 \] What is the value of this expression? Record your answer, and fill in the bubbles on your answer document. Be sure to use the correct place value.

What is the value of the following expression? \[ \frac{5}{6} - \left[ \frac{1}{3} + \frac{5}{12} \right] \]

• 11/12

• 1 1/12

• 1/2

• 1/12

An expression is shown below. 9[(16 + 4) – 5 x 2] Which statement is true about the parentheses in this expression?

• The parentheses indicate that 5 x 2 should be solved first.

• The parentheses indicate that 16 + 4 should be solved last.

• The parentheses indicate that 16 + 4 should be solved after 5 x 2.

• The parentheses indicate that 16 + 4 should be solved before 5 x 2.

Esmeralda makes slime at home. She uses a 1/2 of a cup of glue for her first recipe. She then makes 6 more batches with 3 cups of glue each. The total amount of glue that Esmeralda used can be found using the expression below. 1/2 + (6 x 3) How much glue did Esmeralda use?

• 18 1/2 cups

• 10 1/2 cups

• 19 1/2 cups

• 9 cups

An expression is given below. 27 ÷ (3 x 3) + 15 Which statement is true about the parentheses in this expression?

• The parentheses indicate that 27 ÷ 3 should be solved first.

• The parentheses indicate that 3 + 15 should be solved first.

• The parentheses indicate that 3 x 3 should be solved first.

• The parentheses indicate that 3 x 3 should be solved last.

Jennifer packs ornaments to be put away each year. - She packs 15 boxes, each with 12 ornaments. - She broke 13 ornaments this year. - She was given 5 ornaments as a gift this year. Which expression can be used to show how many ornaments Jennifer has?

• [(15 x 12) – 13] + 5

• 15 x 12 – 13 – 5

• (15 x 12) – (13 + 5)

• (15 + 12) – 13 + 5

Abraham took $20 to the grocery store. He bought two bags of apples for $2.75 each and a package of chicken for $6.30. The amount of change that Abraham received after he purchased these items can be represented using the expression below. 20 – [(2 x 2.75) + 6.30] What is the amount of change that Abraham received in dollars and cents? Record your answer, and fill in the bubbles on your answer document. Be sure to use the correct place value.

An expression is shown below. 12[6.3 + 3(1.9)] Which step in the expression should be solved first?

• 12 × 6.3

• 3(1.9)

• 6.3 + 3

• None of the above