Copyright © Swun Math Grade 8 Unit 1 Lesson 3 P TEFinal Check for Understanding
( Teacher Checks Work)
Directions: Read and solve.
- Which of the following is a rational number and why?
a. .657891203...
b. (^) √ 111
c. (^) √ 81
d. .09098765...
Solution:
c; it is a perfect square. The square root of 81 is 9.
2. True or false? (^) √ 49 is an irrational number. Justify your answer.
Solution:
False; 49 is a perfect square.