Module 7 Test

What does P.E.M.D.A.S stand for?

What should be the first step to simplify the expression 8 + 3 × (5 - 2)?

• Subtract 2 from 5.

• Multiply 3 by 5.

• Add 8 to 3.

• Multiply 8 by 3.

Linda writes the expression 12 ÷ (2 × 5) to represent the number of books she packed. Which story matches the expression she wrote?

• Linda packed a box with 12 books. Then she packed 2 boxes with 5 books in each box.

• Linda packed a box with 12 books. Then she packed the box with 2 books and 5 more.

• Linda packed a box with 12 books. Then she packed a box with 2 books and another box with 5 books.

• Linda packed 5 boxes with 2 books in each box. Then she packed 5 boxes with 12 books in each box.

Devon simplified a numerical expression. The correct answer is 6. Which could be the expression?

• (12 – 8) × 9

• 9 + (12 – 8)

• 12 ÷ (9 – 8)

• (8 × 9) ÷ 12

A recipe calls for 2 cups of whole wheat flour and 1 cup of white flour. Simplify the expression 4 × (2 + 1) to find the number of cups of flour Lenny needs to make four times the recipe. How many cups of flour does Lenny need in all?

Mathematical Equivalence

ON

Gina’s bookshelf has 3 shelves with 9 nonfiction books on each shelf and 2 shelves with 11 fiction books on each shelf. Which expression shows the number of books on Gina’s bookshelf?

• (3 + 9) × (2 + 11)

• (3 × 9) + (2 × 11)

• 3 × (9 × 2 ) + 11

• 3 × (9 + 2) + 11

Matt had $20. Then he worked 7 hours for $8 each hour. Which expression matches the words?

A jewelry designer has 120 beads. In one day, she uses 3 packets of 12 beads and 4 packets of 10 beads. Which expression represents the number of beads left at the end of the day?

• 120 − [(3 × 12) + (4 × 10)]

• [120 − (3 × 12)] + (4 × 10)

• 120 − [(3 + 4) × (12 + 10)]

• 120 − (3 × 12 + [4 × 10])

What is the value of the expression? 4 × [(25 × 1) + (12 × 2)]

• A. 148

• B. 196

• C. 28

• D. 49

Which words match the expression? (4 × 6) ÷ 3

• A. Ella has 4 boxes of granola bars. Then she buys 6 more granola bars. She shares all the granola bars equally among 3 friends.

• B. Ella has 3 boxes with 6 granola bars in each box. She shares all the granola bars equally among 3 friends.

• C. Ella has 6 granola bars. She divides each granola bar into 3 equal pieces. She shares all of the pieces equally among 4 friends.

• D. Ella has 4 boxes with 6 granola bars in each box. She shares the granola bars equally among 3 friends.