Question

Identify which condition is necessary for a number to be rational

A. It must not be an endless decimal
B. It must not be negative
C. it must be written as a fraction
D. It must be able to be expressed as an integer divided by a nonzero integer

Answer 1

Which of the following is irrational?
A. 3.63636363636363636363.....
B. -7 8/37
C. √3/4
D. 52.781654292

Answer 2

Estimate the value of 6x√2. Which of the following choices is the best estimate?
A. 7.1
B. 9.8
C. 6.4
D. 8.4

Answer 3

Which statement is true about the square root of 28?
A. It is between 6 and 7, probably closer to 6.
B. It is between 4 and 5, probably closer to 5.
C. It is between 5 and 6, probably closer to 5.
D. It is between 5 and 6, probably closer to 6.

Answer 4

Which statement is true about the integer fraction that equals the square root or 2?
A. It does not exist
B. It requires a computer to find it
C. It is equal to 1
D. It involves large numbers