7th Grade Math

Extra Practice EP3

Extra Practice

Multi-Part Lesson 1-1 (continued)

PART D PAGES 38–41

Use the Distributive Property to evaluate each expression.

1. 3 ( 4 + 5 ) 2. ( 2 + 8 ) 6 3. 4 ( 9 - 6 )


2. 8 ( 6 - 3 ) 5. 5 ( 200 - 50 ) 6. 20 ( 3 + 6 )


3. ( 20 - 5 ) 8 8. 50 ( 8 + 2 ) 9. 15 (1,000 - 200 )


4. 3 (2,000 + 400 ) 11. 12 (1,000 + 10 ) 12. 7 (1,000 - 50 )

Evaluate each expression mentally. Justify each step.

13. ( 5 + 17 ) + 25 14. 13 + ( 22 + 17 ) 15. ( 8 + 18 ) + 92


14. ( 11 + 32 ) + 9 17. 4 + ( 15 + 76 ) 18. ( 25 + 56 ) + 75


15. ( 4 · 21 ) · 25 20. 5 · ( 40 · 8 ) 21. ( 2 · 38 ) · 50


16. ( 12 · 7 ) · 5 23. 25 · ( 12 · 4 ) 24. ( 15 · 9 ) · 2

Multi-Part Lesson 1-2: Patterns

PART A PAGES 42–43

1. MONEY The table shows the amount of money Georgia has in her piggy
   bank for each week. If the pattern continues, how much money will she
   have saved in Week 8?

Week 1 Week 2 Week 3 Week 4

$6.75 $7.25 $7.75 $8.25

2. GEOMETRY Draw the next two figures in the pattern.


3. ALGEBRA What are the next two numbers in the pattern?
   564, 549, 534, 519, 504, _, __

PARTS B C PAGES 44–50

Describe the relationship between the terms in each arithmetic

sequence. Then write the next three terms in each sequence.

1. 5, 9, 13, 17, ... 2. 3, 5, 7, 9, ... 3. 10, 15, 20, 25, ...


2. 90, 93, 96, 99, ... 5. 8, 14, 20, 26, ... 6. 4.5, 5.4, 6.3, 7.2, ...


3. 0.3, 0.4, 0.5, ... 8. 2.3, 3.4, 4.5, 5.6, ... 9. 8.9, 9.1, 9.3, 9.5, ...


4. 3, 11, 19, 27, ... 11. 350, 375, 400, 425, ... 12. 620, 635, 650, 665, ...


5. 2, 7, 12, 17, ... 14. 10, 17, 24, 31, ... 15. 9, 90, 171, 252, ...


6. 2.6, 2.8, 3.0, 3.2, ... 17. 4.1, 4.6, 5.1, 5.6, ... 18. 6.6, 7.7, 8.8, 9.9, ...


7. 19.5, 21, 22.5, 24, ... 20. 14.5, 14.8, 15.1, 15.4, ... 21. 0.1, 0.4, 0.7, 1.0, ...

EP2_EP36_ExtPract_M1_895130.indd EP3 1/6/10 11:46 AM