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St. Bernard Academy of Taguig Inc.: 1 Preliminary Examination in Mathematics Grade - 9

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St. Bernard Academy of Taguig Inc.

B-4 L-12 PHASE 2 Pinagsama village Taguig City

1st Preliminary Examination in Mathematics


Grade - 9

Name: ____________________________________ Date: _______________________


Teacher: Ms. Kayzeelyn S. Morit Section: _____________________

I. Write the rule of exponent that can be applied in each exponential term.

__________________1. (𝑥𝑦)2 ___________________6. (2𝑏 2 𝑥)3


__________________2. (42 )(44 ) ___________________7. (−62 )3
3 5𝑎5
__________________3. (5)3 ___________________8. 5𝑎2

__________________4. (ℎ5 )2 ___________________9. 𝑤1


__________________5. (7𝑦 3 )0 ___________________10. (2𝑎𝑏)1

II. Perform the indicated operations and simplify. Show you solutions in a blank paper provided, strictly
no erasures!! (2pts)

−3𝑎3 𝑦
1. ( 4𝑎5 𝑦 )2 = __________________ 6. (8𝑥 2 𝑦 2 )3 (−2𝑥 3 𝑦)2 = _____________________

−2𝑎2 𝑦 3
2. [(6𝑎𝑏 3 )(−4𝑎𝑏)]0 = __________________ 7. ( 𝑎3 𝑦
) = ________________________

3. (𝑏 6 )(−5𝑎𝑏2 )(𝑎3 𝑏) = ___________________ 8. 3𝑥 −4 𝑦 = ______________________


8𝑎 −6 𝑏−4
4. (3𝑥𝑦)0 = _______________________ 9. 𝑎 −2 𝑏−3
= _______________________
4𝑥 0 𝑦 −5
5. 𝑧 −2
= _______________________ 10. 𝑎2 𝑏 2 (𝑎−1 𝑏−1 ) = ________________________

III. Simplify the following radicals. Show you solutions in a blank paper provided, strictly no erasures!!
(2pts)

1. √4𝑎2 𝑏 2 = ____________________ 6. √121𝑥 6 𝑦 4 = _________________________


25 3
2. √49 = ____________________ 7. √343𝑥 3 𝑦 6 =_________________________

5 𝑥 10
3. √64𝑥 5 = __________________ 8. √72 = ______________________
3 3
4. √−27𝑥 3 𝑦 5 = ____________________ 9. √125𝑤𝑧𝑦 7 = _______________________
5 3
5. 6√64𝑥 3 𝑦 6 = ____________________ 10. 2√27𝑎𝑏𝑐 6 = _______________________

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