# Expanded and scientific notation

1. In the number 351,472, which digit tells the number of thousands?

____a. 5

____b. 4

____c. 3

_x__d. 1

2. Write expanded notation for 7205.

____a. 7 thousands + 2 hundreds + 5 tens

__x_b. 7 thousands + 2 hundreds + 5 ones

____c. 7 thousands + 2 tens + 5 ones

____d. 2 thousands + 7 hundreds + 5 ones

3. Add: 27, 504

+32, 751

________

____a. 61,256

_x__b. 60,255

____c. 59,256

____d. 59,255

4. Subtract: 7021

- 3567

______

_x__a. 3454

____b. 3544

____c. 4563

____d. 4589

5. Round 62, 598 to the nearest hundred.

____a. 63,000

_x__b. 62,600

____c. 62,500

____d. 62,000

6. Estimate the difference by rounding to the nearest hundred: 6238

_ 4197

______

__x_a. 2000

____b. 2040

____c. 2050

____d. 2100

7. Which of the following is true?

____a. 3<2

____b. 11>9

__x_c. 4>12

____d. 17<15

8. Multiply: 46

x85

____

____a. 4500

____b. 4030

_x__c. 3910

____d. 3840

9. Divide: 62/19,053

__x_a. 307 R 19

____b. 307 R 1

____c. 300 R 3

____d. 37 R 9

10. Solve: 32 + x=71

____a. 30

_x__b. 39

____c. 43

____d. 103

11. Solve: 13.y= 234

____a. 28

____b. 24

____c. 19

__x_d. 18

12. In 1998, there were 912,674 U.S. residents who were born in the Philippines, 744,830 who were born in Canada, and 736,971 who were born in Cuba. How many U.S. residents were born in those three countries?

____a. 1,481,801

____b. 1,657,504

_x__c. 2,394,475

____d. 3,139,305

13. There were 33,191 athletes who participated in NCAA soccer in 1997-1998. This was 4362 more than the number of athletes who participated in NCAA basketball. How many athletes participated in basketball?

_x__a. 28,829

____b. 33, 191

____c. 35,372

____d. 37,553

14. A rectangle conference table measures 72 in. by 150 in. What is the area of the table?

____a. 444 in 2

____b. 5400 in 2

____c. 7992 in 2

_x__d. 10,800 in 2

15. A box contains 5750 paper clips. How many orders can be filled from the box if each order requires 250 paper clips?

_x__a. 23

____b. 25

____c. 30

____d. 50

16. Simplify: (83-18) divided 5

____a. 11

__x_b. 13

____c. 20

____d. 79

17. Simplify: 2^3 +56 divided 7

____a. 16

____b. 14

____c. 12

_x__d. 9

18. Find the average of 93, 82, 67, and 82.

____a. 85

____b. 82

_x__c. 81

____d. 80

19. Simplify: 5x{(24-19)x[(25+23)divided 12-(9-7)]}

____a. 570

____b. 120

____c. 100

__x_d. 50

20. Brandon scores four 92's, three 88's, and a 96 on his eight quizzes. Find his average.

____a. 88

____b. 90

____c. 91

_x__d. 92