Grade 8 Decimals Worksheets
Free printable decimals practice for Grade 8 students. Generate problems, solve them on screen or paper, and download as PDF.
Practice Worksheet
Grade 8 Decimals Practice
Solve each problem. Show your work.
- 1.Calculate: 2.83 + 1.04
- 2.Calculate: 5.41 − 3.78
- 3.Round 3.62 to the nearest tenth.
- 4.Calculate: 8.82 + 2.25
- 5.Calculate: 9.01 − 0.57
- 6.Round 8.85 to the nearest tenth.
Show answer key
- Question 1: 3.87
- Question 2: 1.63
- Question 3: 3.6
- Question 4: 11.07
- Question 5: 8.44
- Question 6: 8.8
Free Practice Worksheets
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Build confidence with approachable problems
Solve each problem. Take your time.
- 1.Calculate the surface area of a cylinder with a radius of 2.5 cm and a height of 4.0 cm using the formula SA = 2 * 3.14 * r * (r + h).
- 2.Evaluate the expression using the Pythagorean theorem where a = 1.5 and b = 2.0: c = √(a² + b²).
- 3.Find the value of 15% of 8.5 to represent a scale factor change.
- 4.Convert the fraction 3/8 into a decimal and multiply the result by 4.2.
- 5.Calculate the volume of a cylinder with a radius of 2.0 cm and a height of 5.5 cm using V = 3.14 * r² * h.
- 6.Apply a transformation by multiplying the coordinate (1.2, 3.4) by a scale factor of 2.5.
A selection of topic skills
Solve each problem. Show your work.
- 1.Evaluate the following expression using the order of operations: 12.5 + 3.2 * (4.8 - 1.3)².
- 2.Convert the repeating decimal 0.727272... into a fraction in simplest form.
- 3.A cylindrical tank has a radius of 2.5 meters and a height of 4.2 meters. Calculate the volume of the tank using 3.14 for pi. Round your answer to the nearest hundredth.
- 4.A retail store is offering a 25% discount on a laptop originally priced at 849.99. If sales tax of 8.5% is applied to the discounted price, what is the final cost the customer will pay?
- 5.Find the length of the hypotenuse of a right triangle where the two legs measure 5.6 cm and 10.5 cm. Provide your answer as a decimal rounded to the nearest tenth.
- 6.Compare the following values by placing them in ascending order: 0.85, 4/5, 0.825, and 83.2%.
Skill map
How decimals skills connect
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What Your Child Will Learn
Grade 8 decimals are fully integrated into algebraic and financial problem-solving. Students divide by decimals fluently, including in multi-step expressions, and use decimals within formulas for slope, rate of change, surface area, and volume. Scientific notation introduces decimals as part of representing very large or very small numbers.
Financial literacy applications — simple interest, compound growth, unit pricing, and discounts — rely heavily on decimal multiplication and division. Students solve equations with decimal coefficients and interpret decimal answers in real-world contexts, including deciding when to round and how precision matters. Decimal fluency here supports the transition into high school math, where computation is assumed rather than taught.
Skills Covered
- Dividing by decimals in multi-step expressions
- Using decimals in slope and rate-of-change formulas
- Applying decimals to scientific notation
- Solving financial literacy problems (interest, discounts, growth)
- Solving equations with decimal coefficients
- Determining appropriate rounding and precision in real contexts
Curriculum Aligned: Aligned with Strand B (Number) and Strand C (Algebra): applying decimal fluency to algebraic expressions, formulas, and financial contexts.
Parent Tip: Walk through a real interest calculation together — a savings account or a loan — so your child sees why decimal precision matters when money is involved.
What your child will practice
- Fractions, Decimals, PercentsConvert fluently between fractions, decimals, and percents.
- Operations with Rational NumbersPerform operations with rational numbers including negative fractions and decimals.
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Check my workFrequently Asked Questions
How do decimals connect to fractions?
Decimals are fractions with denominators of 10, 100, 1000, etc. Understanding this connection helps students convert between forms and grasp place value.
What real-life examples use decimals?
Money is the most relatable example. Measurement (meters, kilograms), sports statistics, and temperature also provide practical decimal contexts.
When do students learn decimal operations?
Decimal concepts start in Grade 4 with tenths and hundredths. By Grade 6, students should be comfortable with all four operations involving decimals.