Lesson 7: Practice Problems

Problem 1

In the context of elevation, what would feet mean?

Problem 2

Match the statements written in English with the mathematical statements.

  1. The number -4 is a distance of 4 units away from 0 on the number line.

  2. The number -63 is more than 4 units away from 0 on the number line.

  3. The number 4 is greater than the number -4.

  4. The numbers 4 and -4 are the same distance away from 0 on the number line.

  5. The number -63 is less than the number 4.

  6. The number -63 is further away from 0 than the number 4 on the number line.

Problem 3

Compare each pair of expressions using >, <, or =.

Problem 4 From Unit 7 Lesson 5

Mai received and spent money in the following ways last month. For each example, write a signed number to represent the change in money from her perspective.

  1. Her grandmother gave her $25 in a birthday card.

  2. She earned $14 dollars babysitting.

  3. She spent $10 on a ticket to the concert.

  4. She donated $3 to a local charity

  5. She got $2 interest on money that was in her savings account.

Problem 5 From Unit 7 Lesson 1

Here are the lowest temperatures recorded in the last 2 centuries for some US cities. Temperatures are in degrees Fahrenheit.

  • Death Valley, CA was -45 in January of 1937.

  • Danbury, CT was -37 in February of 1943.

  • Monticello, FL was -2 in February of 1899.

  • East Saint Louis, IL was -36 in January of 1999.

  • Greenville, GA was -17 in January of 1940.

  1. Which of these states has the lowest record temperature?

  2. Which state has a lower record temperature, FL or GA?

  3. Which state has a lower record temperature, CT or IL?

  4. How many more degrees colder is the record temperature for GA than for FL?

Problem 6 From Unit 5 Lesson 13

Find the quotients.