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# Day 3 finding square roots

## on Sep 09, 2010

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## Day 3 finding square rootsPresentation Transcript

• Mercredi 1er Septembre
Warm up
• HW Corrections
3. 4 4. 400 5. 1
6. 81 7. 9 8. 16
9.
10. √9 + 16 11. √64/4 12. 2√100 - 75
• Review:
What does it mean to Square a number?
What does it mean to take the Square Root?
• What do we do if asked to find the square root of a number and the answer is not a whole number?
1) Use the CALCULATOR
Round to the nearest thousandth the following numbers
√8
√50
Round to the nearest tenth the following numbers
√80 √45
• 2) Put the number in between 2 integers
• Putting numbers on a number line
√8
-5
5
-1
-2
-3
-4
1
2
0
3
4
√50
10
8
9
1
0
2
3
4
5
6
7
-1
-2
-3
-4
-5
-6
-7
-8
-9
-10
• Applications with partner
• Jeudi 2 Septembre
Warm up
·Put the following square roots between 2 consecutive integers
√110 -√50
·Round the following expressions to the nearest tenth
√17 √62 √70
• Homework correction
2. -√72 3. √200 4. -√340
5.
Round to the nearest tenth
6. √83 7. √91.5 8. √650 9.√190
• Where do square roots fit in our number map?
• ·If the square root of a number is a whole number or a terminating decimal, it's rational
Ex :
·If the square root of a number is a non terminating decimal, you can be sure it's irrational
Ex:
• Rational or irrational ?
• Study guide
Rational or irrational?
Putting square root between 2 integers
Square roots and order of operations
Finding and rounding square roots
• Review game
• -4
• √121 - 12
√25 - 9
2
• Round the following number to the nearest tenth
√62
√27
√71
• Vendredi 3 Septembre
Warm up
• Study guide check
• Quiz # 1
Determine wether the following numbers are rational or irrational (explain why) :
1. 5/7 2. -4 3. 2.3434...
4. √50 5. √64 6. π
• Using the order of operations, find the value of the following expressions
7. 7 - √16 11. 3√25 + 5
8. √49 - 8
9. √100 - 36
10. √36
3
• Put the following irrational numbers between 2 consecutive integers
12. √30 13. √90 14. -√36
15. Order the following numbers from least to greatest
3 , 2/3 , √10 , 22 , √4
• Round the following square roots to the nearest tenth:
16. √83 17. √12 18. √1223
Round the following square roots to the nearest hundredth:
19. √77 20. √24
• Plot the following numbers on the number line:
21. √2 22. √100 23. √47 24. -√25
10
8
9
1
0
2
3
4
5
6
7
-1
-2
-3
-4
-5
-6
-7
-8
-9
-10
• 25. Complete the map of numbers