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Grades 6, 7 and 8 - Math - Middle School - Algebra - Powers
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Avg score: 66% • Most missed: “If a = 4 and b = 9, which is the smallest number from the following?”

Powers are the small numbers that appear to the upper right of other numbers. Although small they can make a huge difference as in 1010 which is 10,000,000,000 or 10 billion.

Grades 6, 7 and 8 - Math - Middle School - Algebra - Powers
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20 Questions

1. 400 - x3 = 57. What is the value of x?
2. b4 - a2 = 621. Given that the value of a is 2, what is a possible value of b?
3. In the equation x3 + y2 - 6 = 51, we are told that the value of x is 2. What is the value of y?
4. How would you work out the value of 36?
5. If a = 3 and b = 10, what is the difference between a4 and b2?
6. If x = 3, what is the value of x3 + x4 + x5?
7. What is the easiest way to calculate the value of 169?
8. If a = 4 and b = 9, which is the smallest number from the following?
9. If x = 13 and y = 8, what is the answer to x2 - (20y + 9)?
10. Which of these gives the largest value?
11. If x = 3, what is the value of x3 + x4 + x5?
12. If a = 4 and b = 5, which of these is the largest value?
13. If a = 3 and y = 7, what is the answer to 4a(2y2)?
14. 111 - x3 = -105. What is the value of x?
15. If a2 = 25, what is the value of a4?
16. In the equation x3 + y2 - 6 = 51, we are told that the value of x is 2. What is the value of y?
17. 19 is 1. What is 91?
18. If a = 4 and b = 5, which of these is the largest value?
19. To what power does 6 need to be raised to give a value of 216?
20. If x = 13 and y = 8, what is the answer to x2 - (20y + 9)?

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