Test with real numbers

gftrfg The real Numbers

State the integers that correspond to the situation.

1. On Wednesday, the temperature was 24° above zero. On Thursday, it was 2° below zero.

2. A student deposited her tax refund of $750 in a savings account. Two weeks later, she withdrew $125 to pay sorority fees.

3. U.S. Public Debt.

Recently, the total public debt of the United States was about $5 600 000 000 000.

4. Birth and Death Rates.

Recently, the world birth rate was 270 per ten thousand. The death rate was 97 per ten thousand.

5. In bowling, the Alley Cats are 34 pins behind the Strikers going into the last frame. Describe the situation of each team.

6. During a video game, Maggie intercepted a missile worth 20 points, lost a starship worth 150 points, and captured a landing base worth 300 points.

Addition of Real Numbers

Solve.

1. Lake Level.

In the course of one four-month period, the water level of lake Champlain went down 2 ft, up 1 ft, down 5 ft, and up 3 ft. How much had the lake level changed at the end of the four months.

2. Tallest Mountain.

The tallest mountain in the world, when measured from base to peak, is Mauna Kea (White Mountain) in Hawaii. From its base 19,684 ft below sea level in the Hawaiian Trough, it rises 33,480 ft. What is the elevation of the peak above sea level?

3. Telephone Bills.

Erika’s cell-phone bill for July was $82. She sent a check for $50 and then made $37 worth of calls in August. How much did she then owe on her cell-phone bill?

4. Temperature Changes.

One day the temperature in Lawrence, Kansas, is 32°F at 6:00 am. It rises 15° by noon, but falls 50° by midnight when a cold front moves in. What is the final temperature?

5. Stock Changes.

On a recent day, the price of Quaker Oats stock opened at a value of $61.38. During the day, it rose $4.75, dropped $7.38, and rose $5.13. Find the value of the stock at the end of the day.

6. Football Yardage.

In a college football game, the quarterback attempted passes with the following results. Find the total gain or loss.

TRY GAIN OR LOSS

1st 13-yd gain

2nd 12-yd-gain

3rd 21-yd gain

7. Account Balance.

Leah has $460 in a checking account. She writes a check for $530, makes a deposit of $75, and then writes a check for $90. What is the balance in her account?

8. Credit Card Bills.

On August 1, Lyle’s credit card bill shows that he owes $470. During the month of August, Lyle sends a check for $45 to the credit card company, charges another $160 in merchandise, and then pays off another $500 of his bill. What is the new balance of Lyle’s account at the end of August.

Substraction

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