Answers to Chapter 2 Review, Assessment, and Standardized Test Practice

p.101

 

1. six hundred eighty thousand two hundred one

2. (3 x 10,000) + (5x1,000) + (7x100) + (9x10)

3. 5,003

4. 672

5. 246

6. 278

7. 21 ft

8. 18 in.

 

p.102

9. 2 x 5 = 10

10. 12x11 = 132 ft.

11. 16 R 2 or 16 2/6 or 16 1/3 or 16.-3-

12. 15 R 1 or 15 1/4 or 15.25

13. 9 R 1 or 9 1/3 or 9.-3-

14. 4 R 4 or 4 4/12 or 4 1/3 or 4.-3-

15. 5

16. 23

17. 1

18. 42

19. ($5x7) + $4 = $39

 

p.103

20. 6(11) + 6(5) = 66+30 = 96

6(11+5) = 6(16) = 96

21. 56

22. 96

23. x = 4

24. 113

25. 30

26. 1111 base 2 and 30 base 5

27. 111100 base 2 and 220 base 5

28. 100110 base 2 and 123 base 5

29. 1011 base 2 and 21 base 5

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p.104

1. five thousand one hundred ten = (5x1000) + (1x100) + (1x10)

2. nineteen thousand three = (1x10,000) + (9 x 1000) + (3x1)

3. three thousand four hundred seventy-two = (3x1000) + (4x100) + (7x10) + (2x1)

4. twenty-nine thousand three hundred eight = (2x10,000) + (9x1000) + (3x100) + (8x1)

5. 835 no regrouping

6. 1091 regrouping

7. 1524 regrouping

8. 5025 regrouping

9. 5x12

10. 4x15

11. 7 r 2 or 7 2/5 or 7.4

12. 27 r 1 or 27 1/3 or 27.-3-

13. 63 R 3 or 63 3/4 or 63.75

14. 13 R 1 or 13 1/2 or 13.5

15. 220

16. 42

17. 3

18. 23

19. 716

20. 19

21. 61

22. 15

23. Area = 21 square yd, Perimeter = 20 yd

24. 97,000

25. 64,000

 

p.105

1. B

2. B

3. B

4. B

5. D

6. D

7. D

8. C

9. C

10. C

11. B

12. D