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ISEE Middle Level Math : Equations

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Example Questions

Example Question #321 : Equations

Multiply:

$y^{99}*y^{11}=$

Possible Answers:

$y^{88}$

$y^{100}$

$y^{110}$

110

Correct answer:

$y^{110}$

Explanation:

To solve, add the exponents and leave the base the same:

$y^{99}*y^{11}=y^{110}$

Answer:

$y^{110}$

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Example Question #322 : Equations

Which of the following phrases can be written as the algebraic expression 5 (75 - x ) ?

Possible Answers:

The product of five and a number subtracted from seventy-five

Seventy-five subtracted from the product of five and a number

The correct answer is not given among the other responses.

Five mutiplied by the difference of a number and seventy-five

Five mutiplied by the difference of seventy-five and a number

Correct answer:

Five mutiplied by the difference of seventy-five and a number

Explanation:

5 (75 - x ) is five multiplied by the expression 75-x .

75-x is the difference of seventy-five and a number.

Subsequently, 5 (75 - x ) is "five multiplied by the difference of seventy-five and a number".

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Example Question #323 : Equations

Which of the following statements demonstrates the inverse property of multiplication?

Possible Answers:

$8.4 \times 1 = 8.4$

None of the other answer choices contain the correct response.

$8.4 \times\left ( 5.3 \times 4.8 \right )= \left (8.4 \times 5.3 \right ) \times 4.8$

$8.4 \times 5.3 = 5.3 \times 8.4$

$8.4 \times 0 = 0$

Correct answer:

None of the other answer choices contain the correct response.

Explanation:

The inverse property of multiplication states that for every real number, a number exists, called the multiplicative inverse, such that the number and its inverse have product 1. Of the statements given, none demonstrate this property.

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Example Question #324 : Equations

$4^{3}*2^{3}=$

Possible Answers:

251

512

521

215

Correct answer:

512

Explanation:

First take care of the exponents:

$4^{3}=64$

$2^{3}=8$

Then multiply:

64*8=512

Answer: 512

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Example Question #325 : Equations

$5^{2}*7^{2}=$

Possible Answers:

1200

1225

1275

1250

Correct answer:

1225

Explanation:

First square both numbers:

$5^{2}=25$

$7^{2}=49$

Then multiply those squares together:

25*49=1225

Answer: 1225

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Example Question #326 : Equations

Solve for :

5x=650

Possible Answers:

155

165

130

140

Correct answer:

130

Explanation:

To solve, divide by 5 on each side:

$5x\div 5=650\div 5$

x=130

Answer: 130

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Example Question #327 : Equations

Solve for :

12t=540

Possible Answers:

528

552

Correct answer:

Explanation:

To solve, divide by 12 on each side:

$12t\div 12=540\div 12$

t=45

Answer:

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Example Question #328 : Equations

$\sqrt{144}*\sqrt{81}=$

Possible Answers:

111

110

109

108

Correct answer:

108

Explanation:

First take the square roots:

$\sqrt{144}=12$

$\sqrt{81}=9$

Then multiply:

12*9=108

Answer: 108

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Example Question #329 : Equations

$\sqrt{64}*\sqrt{169}=$

Possible Answers:

103

105

104

102

Correct answer:

104

Explanation:

First, find the square roots:

$\sqrt{64}=8$

$\sqrt{169}=13$

Then multiply those square roots together:

8*13=104

Answer: 104

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Example Question #2652 : Isee Middle Level (Grades 7 8) Mathematics Achievement

If f=4x+1 and x=3 , then what is the value of the expression below?

$3f+9\cdot \frac{4}{3} \right$

Possible Answers:

Correct answer:

Explanation:

If f=4x+1 and x=3 and we need to solve for , the first step is to plug in for . This results in:

$f=4\cdot 3+1$

f=12+1

f=13

Now that we know that f=13 , we can plug in for into the expression below:

$3f+9\cdot \frac{4}{3} \right$

$3\cdot13+\frac{36}{3}$

39+12

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ISEE Middle Level Math : Equations

Study concepts, example questions & explanations for ISEE Middle Level Math

All ISEE Middle Level Math Resources

Example Questions

Example Question #321 : Equations

Example Question #322 : Equations

Example Question #323 : Equations

Example Question #324 : Equations

Example Question #325 : Equations

Example Question #326 : Equations

Example Question #327 : Equations

Example Question #328 : Equations

Example Question #329 : Equations

Example Question #2652 : Isee Middle Level (Grades 7 8) Mathematics Achievement

All ISEE Middle Level Math Resources

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