7th Grade Math

EP4 Extra Practice

Extra Practice

Multi-Part Lesson 1-3: Square Roots

PARTS A B PAGES 52–56

Find the square of each number.

1. 4 2. 19 3. 13 4. 25


2. 9 6. 2 7. 14 8. 24


3. 40 10. 50 11. 100 12. 250

Find each square root.

13. √ 324  14. √ 900  15. √ 2,500 16. √^  576


14. √8,100  18. √  676 19. √ 100  20. √  784


15. √1,024  22. √  841 23. √2,304  24. √ 3,025

PART C PAGES 57–61

Estimate each square root to the nearest whole number.

1. √  27 2. √  112 3. √  249


2. √  88 5. √ 1,500 6. √  612


3. √  340 8. √  495 9. √  264


4. √  350 11. √  834 12. √ 3,700

Graph each square root on a number line.

13. 
    

    √  58 14. √  750 15. √ 1,200

    
    


14. 
    

    √ 1,000 17. √ 5,900 18. √  999

    
    


15. 
    

    √  374 20. √  512 21. √ 3,750

    
    


16. 
    

    √  255 23. √  83 24. √  845

    
    


17. 
    

    ALGEBRA Evaluate √ a - b to the nearest tenth if a = 16 and b = 4.

    
    


18. 
    

    ALGEBRA Estimate the value of (^) √ (^) x + y to the nearest whole number
    if x = 64 and y = 25.
    Multi-Part Lesson 2-1: Integers and the Coordinate Plane
    PARTS A B PAGES 76-80
    Write an integer for each situation.

    
    


19. 
    

    seven degrees below zero 2. a loss of 3 pounds 3. a loss of 20 yards

    
    


20. 
    

    a profit of $25 5. 112°F above 0 6. 2,830 feet above sea level

    
    

Graph each set of integers on a number line.

7. {-2, 0, 2} 8. {1, 3, 5} 9. {-2, -5, 3} 10. {7, -1, 4}

ALGEBRA Evaluate each expression.

11. ⎪ 1 ⎥ 12. ⎪- 8 ⎥ 13. ⎪ 0 ⎥ 14. ⎪- 82 ⎥


12. ⎪ 64 ⎥ 16. ⎪- 128 ⎥ 17. ⎪- 22 ⎥ + 5 18. ⎪- 40 ⎥ - 8


13. ⎪- 18 ⎥ + ⎪ 10 ⎥ 20. ⎪- 7 ⎥ + ⎪- 1 ⎥ 21. ⎪ 98 ⎥ - ⎪- 5 ⎥ 22. ⎪- 49 ⎥ - ⎪- 10 ⎥

EP2_EP36_ExtPract_M1_895130.indd EP4 1/6/10 11:46 AM