Adding and Subtracting Fractions and Decimals

Learn how to add and subtract fractions and decimals by converting between them. Let’s get started! 🚀

Adding and Subtracting Fractions and Decimals - introduction visual

Video Lesson

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Flashcards

Review key concepts visually

The addition and subtraction of fractions and decimals, demonstrating both methods with worked-out solutions using 2.5 + 1/4 and 3/5 - 1.2.Diagram comparing the decimal and fraction methods for adding and subtracting numbers with examples and conversion steps and tips.Adding and subtracting fractions and decimals with conversion of decimals to fractions, finding a common denominator, and solving for the sum.

🛎️ Convert Everything to One Form

  • Convert everything to decimals or to fractions before calculating.
  • Example: 35+0.75=0.6+0.75=1.35\dfrac{3}{5} + 0.75 = 0.6 + 0.75 = 1.35

🛎️ Which Method Should You Use?

  • Decimals → faster because you can add or subtract directly
  • Fractions → better for exact answers (no rounding).

🛎️ Which Method Should You Use?

  • Simplify the decimal part first if possible (e.g. 0.550.3=0.250.55 − 0.3 = 0.25).
  • If decimals do not end neatly, convert everything to fractions.

Practice Questions

Test your understanding

Interactive Activity

Practice adding and subtracting Fractions and Decimals

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