20. What categories are under rational numbers?

A. whole numbers

B. positive integers

C. negative integers

D. all of the choices


21. The number pi is an example of

A. an infinite decimal

B. a real number

C. an irrational number

D. all of the choices


22. Express 2/5 in a decimal. Is it rational or irrational?

A. 0.04 and rational

C. 0.04 and irrational

B. 0.4 and rational

D. 0.4 and irrational


23. Which rational number lies between 3 and 4?

A. 4.01001000...

B. pi C. 3.755

D. VE


24. The square root of 99 falls between which two consecutive whole numbers?

A. 7 and 8

B. 8 and 9

C. 9 and 10


D. 10 and 11


25. The square root of 77 falls between which two whole integers ?

A. 5 and 6

B. 6 and 7

C. 7 and 8

D. 8 and 9


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