8th Grade IAR Math Practice Test Questions
Getting ready for IAR (Illinois Assessment of Readiness) math in grade 8? The 10 questions below are written for 8th graders and cover linear equations and functions, slope, systems of equations, the Pythagorean theorem, volume, exponents and scientific notation, and data analysis. Each question has a worked solution, and the numbers differ from the other grade 8 sets on this site, so you can practice with fresh problems.
These are original practice questions aligned to grade 8 math skills, not official released test items. Use them to find the topics you need to review before test day.
10 practice questions for 8th Grade IAR Math
Answer one question at a time. Press Submit to see right away whether you were correct, along with the worked solution. Your score appears after the last question, with a list of the ones to review.
The amount of money that Jack earns for one hour: \(\frac{$616}{44}=$14\)
The number of additional hours that he works to make enough money is: \(\frac{$826-$616}{1.5×$14}=10\)
The number of total hours is: \(44+10=54\)
Five years ago, Amy was three times as old as Mike. Mike is \(10\) years now. Therefore, \(5\) years ago Mike was \(5\) years.
Five years ago, Amy was: \( A=3×5=15 \)
Now Amy is \(20\) years old: \(15 + 5 = 20\)
\(x\) is directly proportional to the square of \(y\). Then:
\(x=cy^2\)
\(12=c(2)^2→12=4c→c=\frac{12}{4}=3\)
The relationship between \(x\) and \(y\) is:
\(x=3y^2\)
\(x=75\)
\(75=3y^2→y^2=\frac{75}{3}=25→y=5\)
Quiz complete
Best 8th Grade IAR Math Prep Resource
Answers and explanations
Every worked solution opens in the quiz box as soon as you submit that question, so you can compare your method with the solution while it is fresh. Press Try again on the last screen to work through the set a second time.
Looking for the best resource to help you succeed on the 8th Grade IAR Math test?
The Best Books to Ace 8th Grade IAR Math Test
Common Core Math Exercise Book for Grade 8 Student Workbook and Two Realistic Common Core Math Tests
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