ISEE Middle Level Math : ISEE Middle Level (grades 7-8) Mathematics Achievement

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

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Example Questions

Example Question #343 : Equations

Solve for \displaystyle t:

\displaystyle 13t=169

Possible Answers:

\displaystyle 182

\displaystyle 156

\displaystyle 14

\displaystyle 13

Correct answer:

\displaystyle 13

Explanation:

To solve, divide each side by 13:

\displaystyle 13t\div 13=169\div 13

\displaystyle t=13

Answer: \displaystyle 13

Example Question #344 : Equations

Solve for \displaystyle m:

\displaystyle 44m=308

Possible Answers:

\displaystyle 8

\displaystyle 7

\displaystyle 6

\displaystyle 9

Correct answer:

\displaystyle 7

Explanation:

To solve, divide each side by \displaystyle 44:

\displaystyle 44m\div 44=308\div 44

\displaystyle m=7

Answer: \displaystyle 7

Example Question #2671 : Isee Middle Level (Grades 7 8) Mathematics Achievement

Solve the equation:

\displaystyle 4^{2}+5^{3}

Possible Answers:

\displaystyle 141

\displaystyle 145

\displaystyle 143

\displaystyle 140

Correct answer:

\displaystyle 141

Explanation:

To solve, first find the exponents:

\displaystyle 4^{2}=16

\displaystyle 5^{3}=125

Then solve the equation:\displaystyle 16+125=141

Answer: \displaystyle 141

Example Question #2672 : Isee Middle Level (Grades 7 8) Mathematics Achievement

Solve the equation:

\displaystyle 6^{3}-4^{3}

Possible Answers:

\displaystyle 276

\displaystyle 152

\displaystyle 64

\displaystyle 216

Correct answer:

\displaystyle 152

Explanation:

To solve, first find the exponents:

\displaystyle 6^{3}=216

\displaystyle 4^{3}=64

Then solve the equation: \displaystyle 216-64=152

Answer: \displaystyle 152

Example Question #2675 : Isee Middle Level (Grades 7 8) Mathematics Achievement

Solve for x in the following equation:

\displaystyle x-4=5

Possible Answers:

\displaystyle x=4

\displaystyle x=54

\displaystyle x=5

\displaystyle x=9

\displaystyle x=3

Correct answer:

\displaystyle x=9

Explanation:

To solve for x, we want to get x to stand alone or be by itself.  So in the equation

\displaystyle x-4=5

we want x to be alone.  To do that, we must cancel out the -4 with it.  To cancel -4, we must add 4.  If we add 4 to the left side of the equal sign, we must add 4 to the right side.  So,

\displaystyle x-4+4=5+4

\displaystyle x+0=9

\displaystyle x=9

Example Question #15 : Solve Real World And Mathematical Problems By Writing And Solving Equations: Ccss.Math.Content.6.Ee.B.7

Solve for \displaystyle n:

\displaystyle 45n=225

Possible Answers:

\displaystyle 15

\displaystyle 6

\displaystyle 5

\displaystyle 45

\displaystyle 50

Correct answer:

\displaystyle 5

Explanation:

In order to solve this equation we need to isolate the variable to one side. Do not forget to perform the same operation on both sides of the equation.

\displaystyle 45n=225

Divide each side of the equation by \displaystyle 45:

\displaystyle \frac{45n}{45}=\frac{225}{45}

Solve.

\displaystyle n=5

 

Example Question #2673 : Isee Middle Level (Grades 7 8) Mathematics Achievement

Solve for t:

\displaystyle 22t=352

Possible Answers:

\displaystyle 374

\displaystyle 15

\displaystyle 330

\displaystyle 16

Correct answer:

\displaystyle 16

Explanation:

To solve, divide both sides by 22:

\displaystyle 22t\div 22=352\div 22

\displaystyle t=16

Answer: \displaystyle 16

Example Question #2674 : Isee Middle Level (Grades 7 8) Mathematics Achievement

Solve for b:

\displaystyle 35b=525

Possible Answers:

\displaystyle 14

\displaystyle 560

\displaystyle 490

\displaystyle 15

Correct answer:

\displaystyle 15

Explanation:

To solve, divide each side by 35:

\displaystyle 35b\div 35=525\div 35

\displaystyle b=15

Answer: \displaystyle 15

Example Question #2675 : Isee Middle Level (Grades 7 8) Mathematics Achievement

Solve: \displaystyle 12^{2}\div 4^{2}=

Possible Answers:

\displaystyle 6

\displaystyle 3

\displaystyle 9

\displaystyle 16

Correct answer:

\displaystyle 9

Explanation:

To solve, find solve the exponents:

\displaystyle 12^{2}=144

\displaystyle 4^{2}=16

Then solve: \displaystyle 144\div 16=9

Answer: \displaystyle 9

Example Question #2676 : Isee Middle Level (Grades 7 8) Mathematics Achievement

Solve:

\displaystyle 10^{3}\div 40=

Possible Answers:

\displaystyle 25

\displaystyle 40

\displaystyle 960

\displaystyle 1040

Correct answer:

\displaystyle 25

Explanation:

To solve, first solve the exponents:

\displaystyle 10^{3}=1000

Then solve,

\displaystyle 1000\div 40=25

Answer: \displaystyle 25

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