1. Add. 7979 7979 4949 4949 + + 11 9

2. Subtract. 1515 1515 3434 3434 – – 8 8 2 2 9 20 5 5

3. Subtract. 2525 2525 7575 7575 – – –1

4. Add. 6767 6767 1414 1414 – – 4 4 3 3 17 28 –1 + +

5. Add. -4 7 6565 6565 + + 22 35

6. Subtract. – 6.28 – 0.395 – 6.675

7. Subtract. 8 15 4545 4545 – – 4 15 – –

8. 198.274 + 3.98 – 0.14 202.114 Subtract.

9. Multiply. 7373 7373 5959 5959 35 27

10. Multiply. 4747 4747 3434 3434 3 3 75 28

11. Multiply. -3 5 5959 5959 1313 1313 – –

12. Multiply. – 7.2(3.61)(– 0.2) 5.1984

13. Multiply. 2323 2323 4545 4545 × × 6 6 – 3– 3 – 3– 3 76 3 – –

14. Multiply. 11.9(– 29.45) – 350.455

15. What is the multiplicative inverse of –7? 1717 1717 – –

16. Divide. 3737 3737 9494 9494 ÷ ÷ – – 4 21 – –

17. Divide. 3535 3535 6 15 ÷ ÷ 14 5 5

18. Divide. 6565 6565 8989 8989 ÷ ÷ – – 27 20 – –

19. Divide. 2323 2323 ÷ ÷ 5 5 6 6 17 18

20. Divide. 5.3 ÷ 0.6 8.83 – –

21. Divide. – 6.4 ÷ 0.2 – 32

22. Evaluate 4x + 2y when x = and y =. 5858 5858 3737 3737 47 14

23. Evaluate xy – 5x + 4 when x = and y =. Evaluate xy – 5x + 4 when x = and y =. 2323 2323 6565 6565 6565 6565 – –

24. Evaluate – (x + 2y) when x = and y =. Evaluate – (x + 2y) when x = and y =. 8383 8383 7373 7373 4949 4949 232 27 – –

25. Evaluate x – y + z when x = -4.5, y = 73.9, and z = 16.8. Evaluate x – y + z when x = -4.5, y = 73.9, and z = 16.8. – 61.6

26. Evaluate – 5x + xy when x = 3.1 and y = – 58.6. Evaluate – 5x + xy when x = 3.1 and y = – 58.6. – 197.16

27. Evaluate 187.3z – 34.87y when y = 3.9 and z = 16.2. Evaluate 187.3z – 34.87y when y = 3.9 and z = 16.2. 2,898.267

28. x + 8 – + x Simplify. 3737 3737 4949 4949 2525 2525 x + 29 35 68 9

29. 5x 2 – x – + x 2 + x – 6 Simplify. 1818 1818 4747 4747 7272 7272 2323 2323 x 2 + x – 17 2 13 24 46 7

30. x x – 2 + 6 x – Simplify. 3232 3232 5252 5252 2323 2323 x 2 + 13x – 4 3232 3232

31. 1 x + – Simplify. 1515 1515 3232 3232 9 10 x + 6565 6565 9 10

32. (3.9x 2 – 0.05x – 6.2) + (0.7x 2 + 2.6x + 8.3) (3.9x 2 – 0.05x – 6.2) + (0.7x 2 + 2.6x + 8.3) Simplify. 4.6x 2 + 2.55x + 2.1

33. – 5.3(x + xy – 2.6y) + 3.8(x – 0.6xy – 2.1y) – 5.3(x + xy – 2.6y) + 3.8(x – 0.6xy – 2.1y) Simplify. – 1.5x – 7.58xy + 5.8y

34. Solve. 2929 2929 2323 2323 x = x = 3

35. Solve. 1 x – = 2323 2323 1919 1919 2525 2525 x = 79 225

36. Solve. 1717 1717 4747 4747 7x + = x = 3 49

37. Solve. – 0.4x – 2.7 = – 6.8 x = 10.25

38. 1515 1515 3535 3535 x + – = 5 4545 4545 x = 28 2525 2525 Solve.

39. 64.8x – 4.2(x – 3.1) = 6.7 x = – 0.1043 Solve.

40. Five-eighths of the young people in the youth group went on the ski trip. If 25 young people attended this activity, how many are in the youth group? 40 young people

41. A football costs 1.5 times the amount of a basketball. If one of each is purchased and the total price is $37.70 before tax, what is the price of each ball? basketball: $15.08 football: $22.62

42. A new playground at the elementary school is 15 ft. longer than it is wide. If the perimeter that requires fencing is 177 ft., what are the dimensions of the playground? 4545 4545 1515 1515 36 ft. x 52 ft. 2525 2525 1515 1515

43. An apple has one-thirtieth the number of fat grams that a cup of cottage cheese has. If the total number of fat grams is 4.03 g, how many fat grams are in the apple and how many are in the cup of cottage cheese? 0.13 g; 3.9 g

44. (3.52 × 10 8 ) + (6.99 × 10 8 ) 1.051 × 10 9

45. (1.9 × 10 –6 ) – (1.2 × 10 –5 ) – 1.01 × 10 –5

46. (3.69 × 10 –8 )(1.9 × 10 –6 ) 7.011 × 10 –14

47. (8.7 × 10 5 ) ÷ (2.1 × 10 8 ) 4.14 × 10 –3

48. (5.9 × 10 6 )(8.6 × 10 8 ) 5.074 × 10 15

49. (9.2 × 10 –12 ) + (3.6 × 10 –8 ) 3.60092 × 10 –8

50. State the mathematical significance of Exodus 39:32.