Squares & Roots: 28 flashcards
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1. What is a perfect square?
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A number that can be expressed as the product of an integer with itself.
2. List the first five perfect squares.
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1, 4, 9, 16, 25
3. What is the square of 12?
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144
4. What is the square root of 169?
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13
5. What is the square root symbol called?
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Radical sign
6. What does $\sqrt{25}$ equal?
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5
7. What is the square of 0?
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0
8. Is 1 a perfect square?
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Yes, because $1 = 1 \times 1$.
9. What is the square root of 0?
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0
10. What is the square of 15?
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225
11. What is the square root of 400?
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20
12. What is the square of 7?
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49
13. What is the square root of 81?
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9
14. What is the square of 10?
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100
15. What is the square root of 1?
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1
16. What is the square of 20?
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400
17. What is the square root of 36?
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6
18. What is the square of 9?
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81
19. What is the square root of 100?
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10
20. What is the square of 5?
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25
21. What is the inverse operation of squaring a number?
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Finding the square root
22. What is the square of a negative number, such as (-6)²?
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36, because a negative times a negative is positive
23. Can a negative number have a real square root?
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No, because no real number multiplied by itself gives a negative result
24. What is the square root of a fraction, such as √(9/16)?
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3/4, since √9 = 3 and √16 = 4
25. What is the square of a fraction, such as (2/3)²?
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4/9, since 2² = 4 and 3² = 9
26. What is the square root of 144?
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12
27. What is the square of 25?
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625
28. Between which two whole numbers does √50 lie?
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Between 7 and 8, since 7² = 49 and 8² = 64
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