Digits, Grade 7, Volume 1, Homework Helper

4-1: TEKS Practice

  • 1. What are the radii of the circle shown with O as the center?

    A circle with O at the center. Points C, J, and Q are on the circle. Line segments go from O to Q, Q to J, J to C, C to O, and O to J.

    • A. table with 1 row and 4 columns , row1 column 1 , j c comma bar , column 2 q o comma bar , column 3 and , column 4 q j bar , end table

    • B. table with 1 row and 4 columns , row1 column 1 , j o comma bar , column 2 q o comma bar , column 3 and , column 4 c o bar , end table

    • C. table with 1 row and 4 columns , row1 column 1 , j o comma bar , column 2 q c comma bar , column 3 and , column 4 c j bar , end table

    • D. table with 1 row and 4 columns , row1 column 1 , j q comma bar , column 2 q c comma bar , column 3 and , column 4 c j bar , end table

  • 2. Which is the diameter of the circle shown?

    A circle and line segments.

    • A. g o bar

    • B. q g bar

    • C. j o bar

    • D. j g bar

  • 3. Find the length of the diameter of the circle.

    A circle with radius 5 centimeters

  • 4. Think About the Process

    • a. How do you find the radius of a circle when given the diameter?

      • A. To find the radius, you need to add 2 to the diameter.

      • B. To find the radius, you need to divide the diameter by 2.

      • C. To find the radius, you need to subtract 2 from the diameter.

      • D. To find the radius, you need to multiply the diameter by 2.

    • b. Find the radius of a circle with a 8 cm diameter.

  • 5. Find the length of the radius of the circle shown.

    A circle with diameter 23.1 centimeters.

  • 6. Think About the Process The radius of a pumpkin is 24 cm. The expression 5x + 38 represents the diameter.

    • a. What must you do before you can write an equation to solve for x?

      • A. Subtract 2 from the radius to find the diameter.

      • B. Divide the radius by 2 to find the diameter.

      • C. Multiply the radius by 2 to find the diameter.

      • D. Add 2 to the radius to find the diameter.

    • b. Write an equation to solve for x. Choose the correct answer below.

      • A. 5x + 38 = 22

      • B. 5x + 38 = 12

      • C. 5x + 38 = 26

      • D. 5x + 38 = 48

    • c. Find the value of x.

  • 7.

    A circle with radius 34.9 yards.

    • a. Writing Find the diameter of the circle.

    • b. Describe the relationships among the center, radius, and diameter of a circle.


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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