Exponents and Radicals Review (Grade 8)
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Exponents and Radicals Review
1.
Choose the correct answer.
[math](8.6xx10^13)/(4.1xx10^3)[/math]
[math](8.6xx10^13)/(4.1xx10^3)[/math]
- [math] 2.1xx10^-16 [/math]
- [math] 2.9xx10^10 [/math]
- [math] 2.09xx10^16 [/math]
- [math] 2.1xx10^10[/math]
2.
Choose the best answer.
[math]sqrt(20)[/math] is between which two numbers?
[math]sqrt(20)[/math] is between which two numbers?
- 2 and 3
- 3 and 4
- 4 and 5
- 5 and 6
3.
Choose the correct scientific notation for 540,000,000.
- [math]5.4xx10^8[/math]
- [math]5.4xx10^-7[/math]
- [math]5.4xx10^7[/math]
- [math]5.4xx10^9[/math]
4.
Choose the correct answer.
[math](2.76xx10^3)xx(1.93xx10^5)[/math]
[math](2.76xx10^3)xx(1.93xx10^5)[/math]
- [math]5.3xx10^2[/math]
- [math]5.3xx10^5[/math]
- [math]5.3xx10^3[/math]
- [math]5.3xx10^8[/math]
5.
Which of the following is a correct notation for 0.000078?
- [math]7.8xx10^-6[/math]
- [math]7.8xx10^-5[/math]
- [math]7.8xx10^-7[/math]
- [math]7.8xx10^-4[/math]
6.
Choose the best answer.
[math]sqrt(106)[/math] is between which two numbers?
[math]sqrt(106)[/math] is between which two numbers?
- 10 and 11
- 9 and 10
- 11 and 12
- 8 and 9
7.
[math]sqrt(81)[/math]
- 8
- 9
- 31
- 40.5
8.
[math]root(3) 8[/math]
- 2
- 4
- 8
- 1
9.
Which of the following is NOT the same as [math]2^-3[/math]?
- [math]8[/math]
- [math]0.125[/math]
- [math]1/8[/math]
- [math]1/2^3[/math]
10.
[math]4^3 xx 4^-4 = [/math]
- [math]4[/math]
- [math]1/4[/math]
- [math]1/4^7[/math]
- [math]1/4^12[/math]
11.
Choose the correct scientific notation for 245,389,271.
- [math]2.45xx10^-8[/math]
- [math]2.45xx10^-7[/math]
- [math]2.45xx10^7[/math]
- [math]2.45xx10^8[/math]
12.
[math]6^3/3^-2[/math]
- 24
- 1944
- [math]1/24[/math]
- 225
13.
Which of the following is a correct notation for 0.0000005?
- [math]5xx10^-6[/math]
- [math]5xx10^6[/math]
- [math]5xx10^-7[/math]
- [math]5xx10^7[/math]
14.
Evaluate. [math]6^2xx6^-4[/math]
- 0.022
- 0.028
- 0.020
- 0.029
15.
Which of the following is a true statement?
- [math]7xx10^5>6xx10^8[/math]
- [math]7xx10^8<4xx10^7 [/math]
- [math]5xx10^3<3xx10^9 [/math]
- [math]5xx10^3>5xx10^5 [/math]
16.
Choose the correct answer.
[math](1.7xx10^5)xx(2.3xx10^8)[/math]
[math](1.7xx10^5)xx(2.3xx10^8)[/math]
- [math] 3.91xx10^-3 [/math]
- [math] 3.19xx10^-3 [/math]
- [math] 3.91xx10^13 [/math]
- [math] 3.19xx10^13 [/math]
17.
Choose the best answer.
[math]sqrt(72)/5[/math] is
[math]sqrt(72)/5[/math] is
- between 1 and 1.40.
- greater than 2.
- between 1.41 and 2.
- less than 1.
18.
Choose the correct answer.
[math](2.6xx10^3)xx(1.8xx10^9)[/math]
[math](2.6xx10^3)xx(1.8xx10^9)[/math]
- [math] 4.68xx10^3 [/math]
- [math] 4.68xx10^12 [/math]
- [math] 4.68xx10^6 [/math]
- [math] 4.68xx10^9 [/math]
19.
Choose the correct answer.
[math](2.3xx10^6)/(1.5xx10^3)[/math]
[math](2.3xx10^6)/(1.5xx10^3)[/math]
- [math] 1.53xx10^3 [/math]
- [math] 1.53xx10^9 [/math]
- [math] 1.53xx10^6 [/math]
- [math] 1.53xx10^-3 [/math]
20.
[math]3^5/2^3-2^2[/math]
- [math]234/4[/math]
- [math]211/8[/math]
- [math]243/4[/math]
- 1940
21.
Which of the following is a true statement?
- [math]7xx10^5>6xx10^8[/math]
- [math]7xx10^8>4xx10^7 [/math]
- [math]5xx10^3>3xx10^9 [/math]
- [math]5xx10^3>5xx10^5 [/math]
22.
Choose the best answer.
[math]sqrt(27)/3[/math] is between which two numbers?
[math]sqrt(27)/3[/math] is between which two numbers?
- 3 and 4
- 2 and 3
- 1 and 2
- 0 and 2
23.
[math]sqrt(196)[/math]
- 13
- 11
- 12
- 14
24.
[math]root(3) 343 [/math]
- 9
- 8
- 7
- 6
25.
[math]2^-2 / 2^-5[/math] is equivalent to which of the following?
- [math]2[/math]
- [math]1/2[/math]
- [math]8[/math]
- [math]1/8[/math]
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