Rational/Irrational
Which of the following is a rational number?
-4.343443444..., pi, sqrt of 49, sqrt of 90.
sqrt of 49
x2 = 100
10 , -10
Simplify. 63 * 68
611
The wavelength of a green light is about 0.00000051 meter. What is this estimated wavelength as a single digit times a power of 10?
5 x 10-7
Order the following numbers from least to greatest.
2.333333..., sqrt. 8, 9/5, 2 1/4
9/5, 2 1/4, 2.33333..., sqrt. 8
Write 0.7777777... as a fraction
7/9
y3 = -216
-6
Simplify. 418 / 43
415
In 2013, the population of California was about 38,332,521 people. Write the estimated population as a single digit times a power of 10.
4 x 107
Classify 512 as a perfect square, perfect cube, both, or neither.
perfect cube
Is 6.020020002... rational or irrational?
Irrational
Is 64 a perfect square, perfect cube, neither, or both?
both
Write 9-4 using a positive exponent.
1/94
Express your answer in scientific notation.
(2.8 x 104) x (4 x 105)
1.12 x 1010
The land area of Connecticut is about 10,049,000,000 square meters. The land area of Rhode Island is about 3,107,000,000 square meters. How many times larger is the land area of Connecticut than the land area of Rhode Island?
About 3 Times as large.
True or False: All nonperfect squares are irrational.
True
A gift box is a cube with a volume of 512 cubic inches. What is the length of each edge of the box?
8 in.
Evaluate the expression for x = 2 and y = 5
2x0y-2
2/25
(6 x 109) - (2.4 x 107)
Round your answer to the hundredths.
5.98 x 109
x3 = -125. What is the value of x?
-5
Write 5.282828... as a mixed number.
5 28/99
The area of a square classroom is 225 ft2. How long is each wall of the classroom?
15 ft.
Evaluate the expression for x = 2 and y = 5.
-4x-2 + 3y0
2
The popluation of a Town A is 1.25 x 105 people. The population of Town B is 4.16 x 104 people. How many times larger is the population of Town A than the population of Town B?
3 Times larger
Express your answer in scientific notation.
(2.3 x 105) + (4.9 x 106)
5.13 x 106