Digits, Grade 7, Volume 1, Homework Helper

1-3: TEKS Practice

  • 1.

    • a. Is 3.2 − 5.7 positive, negative, or zero?

      • A. negative

      • B. zero

      • C. positive

    • b. Is 3.2 − (− 5.7) positive, negative, or zero?

      • A. negative

      • B. zero

      • C. positive

  • 2.

    • a. Is 2 fifths , minus . open , negative , 5 sixths , close positive, negative, or zero?

      • A. positive

      • B. negative

      • C. zero

    • b. Is 2 fifths , minus . open , 5 sixths , close positive, negative, or zero?

      • A. zero

      • B. positive

      • C. negative

  • 3. Decide if each expression describes a difference that is positive, negative, or zero.

    • a. Is − 4.5 − (− 6.1) positive, negative, or zero?

      • A. negative

      • B. positive

      • C. zero

    • b. Is − 4.5 − 6.1 positive, negative, or zero?

      • A. positive

      • B. zero

      • C. negative

  • 4. Draw a point on a number line to indicate the difference 1 , and 1 third , minus 4 , and 5 sixths , .

  • 5. Which number line in Figure 1 models 1 fourth , minus . open , negative , 5 eighths , close correctly?

  • 6. Find the value of the expression 11.0 − (− 2.1).

  • 7. The temperature in a town is 36.6 ° F during the day and −12.6°F at night. Find the difference in the temperatures.

  • 8. The freezing point of Chemical A is − 70.2 °C. The freezing point of Chemical B is − 164.21 °C. Which chemical has a higher freezing point? How much higher is it?

    • A. The freezing point of Chemical B is °higher than Chemical A's freezing point.

    • B. The freezing point of Chemical A is °higher than Chemical B's freezing point.

  • 9.

    • a. Writing Is 5.3 − 5.3 positive, negative, or zero?

      • A. positive

      • B. negative

      • C. zero

    • b. Is 5.3 − (− 5.3) positive, negative, or zero?

      • A. negative

      • B. positive

      • C. zero

    • c. How can you use the answer for the first part to help you answer the second part?

  • 10.

    • a. Reasoning Is negative , 1 third , minus , 4 fifths positive, negative, or zero?

      • A. negative

      • B. positive

      • C. zero

    • b. What can you say about the sign of the difference when you subtract − mn, for any positive rational numbers m and n?

      • A. The difference is always zero.

      • B. The difference is always negative.

      • C. The difference is always positive.

      • D. The difference is negative if |n|>|m| and positive if |n|<|m|.

    Two number lines


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Table of Contents

Digits, Grade 7, Volume 1, Homework Helper Unit A: Number and Operations Unit B: Expressions, Equations, and Relationships Unit C: Measurement and Geometry Unit D: Proportionality English/Spanish Glossary Formulas Math Symbols Formulas Measures Properties