Unit 3 Math

Which of the following have a value of -12?

Which of the following has/have a POSITIVE value?

Over a period of  $$3\ \frac{1}{2}$$   hours, the height of the water in a harbor, relative to the pier, changes by -7.875 feet.

Over a period of  $$3\ \frac{1}{2}$$  hours, the height of the water in a harbor, relative to the pier, changes by -7.875 feet.

Does the average change in the height of the water each hour indicate that the water level is rising or falling?

The ____ average change in the height each hour means that the water level is ____ during this time period.

Colton plays three rounds of a video game.
- On round 1, he scores -18 points.
- On round 2, he scores -2.75 times he score on round 1
- On round 3, he scores  $$3\ \frac{2}{3}$$  times his score on round 1

Which of the following is/are true.

The product of two rational numbers, x and y, is a negative number.

Which of the following is/are false.

Which of the following expression(s) are true, where the value on the left equals the value on the right?

A factory makes trash bags using plastic pellets. The plastic pellets are placed in barrels which are then poured into a machine.
When the machine is operating, the change to a barrel of pellets is -3.4 kg. per minute.
Each full barrel contains 20 kg of plastic pellets.
Are there enough pellets in a full barrel for the machine to make bags for $$5\ \frac{1}{2}$$   minutes?

A factory makes trash bags using plastic pellets. The plastic pellets are placed in barrels which are then poured into a machine.When the machine is operating, the change to a barrel of pellets is -3.4 kg. per minute.Each full barrel contains 20 kg of plastic pellets. 

Are there enough pellets in a full barrel for the machine to make bags for $$5\ \frac{1}{2}$$   minutes?

There ___ be enough pellets in a full barrel to make bags for $$5\ \frac{1}{2}$$ minutes.

A factory makes trash bags using plastic pellets. The plastic pellets are placed in barrels which are then poured into a machine.
When the machine is operating, the change to a barrel of pellets is -3.4 kg. per minute.
Each full barrel contains 20 kg of plastic pellets.
Are there enough pellets in a full barrel for the machine to make bags for $$5\ \frac{1}{2}$$  
minutes?

$$What\ is\ 10.3-\left(-8\ \frac{3}{5}\right)\ as\ a\ fraction?$$  

Elena divides to find the decimal form of  $$\frac{8}{9}$$  .  Her work is shown.  Elena says that  $$\frac{8}{9}$$  is a rational number cause the decimal form repeats.

Elena divides to find the decimal form of  $$\frac{8}{9}$$ . Her work is shown. Elena says that $$\frac{8}{9}$$  is a rational number cause the decimal form repeats.

Is Elena correct?

Elena divides to find the decimal form of  $$\frac{8}{9}$$  .  He work is shown.  Elena says  $$\frac{8}{9}$$  is a rational number because the decimal form repeats.

Is Elena correct?

For a decimal to represent a rational number, it must ___, so Elena is ___. 

Which shows the correct steps to express  $$\frac{\frac{2}{3}}{\frac{10}{24}}$$  as a decimal?

Raj is making korma for a party. He puts 25 g of curry powder on a food scale. The food scale has marks every 0.1 g. To measure for each recipe, Raj removes  $$\frac{1}{4}$$  g of curry powder from the scale 7 times.  He says the mass of the remaining curry powder is between 18.2 g and 18.3 g.

Which of the following fractions, when expressed as a decimal, is/are TERMINATING?

Which expression has a value LESS THAN 1?

Lola has a balance of -$50 in her bank account. She deposits $6 into the account each week for 3 weeks. The fourth week, Lola withdraws $15.

What is the balance in Lola's bank account after the withdrawal in the fourth week?

Consider the four rational numbers below.

The changes in Tia's wallet for five days are -%1.75, -$1.75, $2.50, $2.50, and -$1.75.

Determine whether each expression represents the mean change (average) in dollars, in Tia's wallet over the five days.