Decimal Notation for Fractions
Aligned to 4.NF.C.6 — Common Core State Standards for Mathematics.
What this lesson teaches
Fractions with a denominator of 10 or 100 can be written as decimals. One tenth is 0.1 and one hundredth is 0.01. The decimal and the fraction are just two ways to write the same amount, which is why a dime is 1/10 of a dollar.
Worked example
Write 3/10 as a decimal. Three tenths means 0.3. And 7/100 is written as 0.07.
Practice questions
- Write 9/10 as a decimal.
- Which is larger, 0.5 or 0.05?
- A nickel is 5 cents. Write that as a fraction of a dollar.
Watch the lesson
Every lesson comes with a video taught in English and Spanish — the same video the QR code in the printed workbook opens.
▶ Watch this lessonEn español
Notación Decimal para Fracciones
Las fracciones con denominador 10 o 100 se pueden escribir como decimales. Un décimo es 0.1 y un centésimo es 0.01. El decimal y la fracción son solo dos formas de escribir la misma cantidad, por eso un décimo de peso equivale a 1/10 del peso.
Ejemplo: Escribe 3/10 como decimal. Tres décimos equivale a 0.3. Y 7/100 se escribe como 0.07.
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