8th Grade Math Workbook (Printable PDF)
A printable 8th grade math workbook: exponents, slope, systems and the Pythagorean theorem, one page a day for 30 days.
Grade 8 Math in 30 Days • ages 13–14 • 55 pages
$6.99 USD • instant PDF download
- 30 daily pages of 15 questions, about 15–20 minutes a day
- 8 tip sheets that explain each topic with worked examples
- Start and finish tests, so you can see the progress
- Full answer key with “How to solve” steps
- Full-color book plus a black-and-white ink-saver copy
Look inside the 8th grade workbook
A tip sheet: the big idea, two worked examples and a “watch out” note. 
Day 1: 8 quick facts, 6 mixed questions and 1 word problem. 
Day 21: the challenge level starts, with harder mixed questions. 
The answer key, with “How to solve” steps for the hardest questions.
What your child will practice
The workbook has 8 tip sheets, one for each big 8th grade topic. Every question on the daily pages shows the number of the tip sheet that explains it, so your child always knows where to look.
- Tip 1: Exponent rulesAn exponent says how many times to multiply the base by itself. With the same base, multiplying means add the exponents and dividing means subtract them.
- Tip 2: Scientific notationScientific notation writes a number as (a number from 1 to less than 10) × (a power of 10). It makes very big numbers short.
- Tip 3: Square roots and the Pythagorean theoremIn a right triangle, a² + b² = c², where c is the longest side, opposite the square corner. A square root undoes squaring.
- Tip 4: Equations with x on both sidesGet all the x terms on one side and all the numbers on the other, then divide. Whatever you do to one side, do to the other.
- Tip 5: Slope and linear functionsSlope is rise over run: how much y changes when x goes up by 1. In y = mx + b, m is the slope and b is the y-intercept.
- Tip 6: Systems of equationsA system is two equations that are both true at once. Combine them to get rid of one letter, solve, then find the other.
- Tip 7: Volume and transformationsCylinder: V = π × r × r × h. A cone is 1/3 of the cylinder with the same base and height. Sphere: V = 4/3 × π × r × r × r. Use π ≈ 3.14.
- Tip 8: Solving word problemsWrite an equation for the story, solve it, then check the answer in the story. A fixed cost is the starting value; a 'per' cost is the rate.
Try questions from the workbook
These are from the “Your turn” boxes on the tip sheets. Tap a question to see the answer.
3² × 3² = ?
Answer: 81
Write 7,300,000 in scientific notation.
Answer: 7.3 × 10⁶
√144 = ?
Answer: 12
6x + 1 = 4x + 9. x = ?
Answer: 4
Slope through (0, 2) and (2, 8)?
Answer: 3
x + y = 9 and x − y = 1
Answer: x = 5, y = 4
Cylinder, r = 3 and h = 10. Volume?
Answer: 282.6
$20 a month plus $4 per GB. 5 GB?
Answer: $40
How the 30 days work
- Day 0: the start test shows what your child already knows.
- Days 1–10: warm-up questions on every topic.
- Days 11–20: the questions build, with more steps and bigger numbers.
- Days 21–30: challenge questions that pull the topics together.
- Day 31: the finish test. Compare it with the start test, then fill in the certificate.
Each page takes about 15–20 minutes. A riddle of the day and an encouragement line keep it fun.
Common Core standards covered
The workbook follows the 8th grade Common Core standards for geometry, the number system, expressions and equations and functions (8.EE, 8.F, 8.G and 8.NS). It works for schoolwork review, summer practice and homeschool.
Is this the right grade?
Choose the grade your child is in now, or the one just finished for summer review. If you are not sure, the free 8th grade math check-up shows which topics are solid in about 15 minutes.
Nearby grades: 7th grade math workbook. See all grades on the printable math workbooks page.
Free 8th grade practice to go with it
Every topic in the book has free lessons and quizzes on Mathify Kids, for example exponent rules, scientific notation, square roots and the pythagorean theorem, equations with x on both sides, slope and linear functions, systems of equations, volume and transformations, solving word problems. For a full overview, see 8th grade math and the free math worksheets.
Problem with a download, or bought the wrong grade? See our refund policy.
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Questions parents ask
What is in the 8th grade math workbook?
55 pages: a start test, 8 tip sheets with worked examples, 30 daily practice pages, a finish test, a progress chart, a certificate and a full answer key. You also get a black-and-white ink-saver copy.
How long does each day take?
About 15–20 minutes. Each day has 8 quick facts, 6 mixed questions and 1 word problem.
Is the 8th grade workbook aligned to Common Core?
Yes. It follows the 8th grade Common Core standards for geometry, the number system, expressions and equations and functions (8.EE, 8.F, 8.G and 8.NS).
Is there an answer key?
Yes. Every answer is in the key at the back, with “How to solve” steps for the hardest question and the word problem on each day.
Can I try it before I buy?
Yes. The free 6-page sample has the cover, how-to page, a tip sheet, days 1 and 2, and their answers.