1. Estimating Irrational Numbers
Teacher Twins©2014

2. Warm Up Is the number rational or irrational? Explain how you know. 1745
−4 9 Π 81

3. Warm Up Answers
Rational
Irrational

4. Estimating Irrational Numbers

5. Remember your perfect squares.

6. It is closer to the 7.

7. Practice
Estimate. Find the two consecutive integers the number falls between and circle the one it is closest to. 45 28
160 12 91

8. Closure Estimate 55 to the nearest tenth.
Hint: Start off estimating as we have been in class and then place the number on a number line.