Unit 1 Review - Signed Numbers

Unit 1 Review - Signed Numbers

Complete work in your notebook. Keep the work organized so you can refer back to it during your test.

Questions #1-4

Multiple Choice or Multiple Select. Be sure to work out each answer before you decide.

Multiple Choice

#1

If a bank represents deposits with positive numbers and withdrawals as negative numbers, what could the expression represent? $$4\cdot\left(-55\right)$$  

• 4 deposits of $55

• 4 withdrawals of $55

• A $4 deposit followed by a $55 withdrawal

• A $4 withdrawal followed by a $55 deposit.

Multiple Choice

#2

What is the value of the following expression?

$$\frac{-54}{9}$$  

• 63

• -6

• 6

• -63

Multiple Select

#3

Which of the following expressions results in a positive number?

• $$-8\left(-3\right)\left(-1\right)$$

• $$-4\left(-5\right)$$

• $$-5\left(-3\right)$$

• $$-1\left(-4\ +\ 5\right)$$

Multiple Select

#4

Which of the following expressions is also equal to -36?

• $$-12+30\ –\ 6$$

• $$-30–(-12)+(-6)$$

• $$-12+(-30)+6$$

• $$-30+(-12)+6$$

• $$-6–(-12)–30$$

Question #5

The Diving Board Question

Multiple Select

#5

The vertical number line represents a diving board and a pool. The diving board is 11 feet high and has a depth of 8 feet. Esther stands on the diving board, which is a point A on the number line. She jumps off of the diving board and ends up at point B. After a few seconds, she swims to point C on the number line. Determine which statements are true.

• The diver is underwater at Point A.

• The change in elevation for Esther from point B to point C is represented by the equation (-5) + 5 = 0

• The expression |11 – (-8) = 19| can be used to describe the difference between the highest point and the lowest point for the diver.

Question #6

The Number Line Question

Fill in the Blanks

Fill in the Blanks

Question #7

The Shopping Question

Multiple Select

#7

Raul is shopping at an airport gift shop. He starts with some money in his wallet, uses only cash to make his purchases, and finishes his shopping trip with no money left. Select each response that correctly completes the statement below.

Raul starts with $30.00 in his wallet and buys 3 keychains for ________ and 5 bookmarks for _________.

• $3 per keychain

• $5 per keychain

• $3 per bookmark

• $6 per bookmark

Question #8

The One Where You Have to Explain Your Answer.

Open Ended

#8

Mr. Salazar deposits $1,720 into his bank account each month. He also withdraws the following amounts each month:

o $650 for rent

o $173 for cell phone

o $185 for other expense

After 12 months, how much money does Mr. Salazar have in his bank account?

Include all necessary work to support your answer.