4th grade decimals: tenths and hundredths

Grades 3–5 (ages 8–11) · 19 videos · Checked and refreshed daily

Quick answer

In 4th grade (ages 9–10), children write fractions with denominators 10 and 100 as decimals and compare decimals to hundredths. Start with Math Antics "Decimal Place Value", then Math with Mr. J decimal models and a Numberock song. Play all on repeat, or loop one example until it clicks.

Play all on repeat

Videos in this playlist

  1. 1Math Antics - Decimal Place ValueMath Antics - Decimal Place ValuemathanticsPlay from here Loop
  2. 2Decimal Models: Tenths | Math with Mr. JDecimal Models: Tenths | Math with Mr. JMath with Mr. JPlay from here Loop
  3. 3Decimal Models: Hundredths | Math with Mr. JDecimal Models: Hundredths | Math with Mr. JMath with Mr. JPlay from here Loop
  4. 4Writing Tenths and Hundredths (Decimals and Fractions) | Math with Mr. JWriting Tenths and Hundredths (Decimals and Fractions) | Math with Mr. JMath with Mr. JPlay from here Loop
  5. 5Math Antics - Converting Base-10 FractionsMath Antics - Converting Base-10 FractionsmathanticsPlay from here Loop
  6. 6Common fractions and decimals | Math | 4th Grade | Khan AcademyCommon fractions and decimals | Math | 4th Grade | Khan AcademyKhan AcademyPlay from here Loop
  7. 7Math Antics - Fractions and DecimalsMath Antics - Fractions and DecimalsmathanticsPlay from here Loop
  8. 8Converting Decimals to Fractions (Tenths, Hundredths, and Thousandths)Converting Decimals to Fractions (Tenths, Hundredths, and Thousandths)Math with Mr. JPlay from here Loop
  9. 9Finding the Value of the Underlined Digit | Decimal Place Value | Math with Mr. JFinding the Value of the Underlined Digit | Decimal Place Value | Math with Mr. JMath with Mr. JPlay from here Loop
  10. 10Writing Numbers in Expanded Form with Decimals Included!Writing Numbers in Expanded Form with Decimals Included!Mashup MathPlay from here Loop
  11. 11Solve Problems with Decimals (Using Models) Math Lesson for KidsSolve Problems with Decimals (Using Models) Math Lesson for KidsGenerationGeniusPlay from here Loop
  12. 12Comparing Decimals | Step-by-Step Examples + Practice | Math with Mr. JComparing Decimals | Step-by-Step Examples + Practice | Math with Mr. JMath with Mr. JPlay from here Loop
  13. 13Comparing Decimal Numbers - Math Antics ExtrasComparing Decimal Numbers - Math Antics ExtrasmathanticsPlay from here Loop
  14. 14Ordering Decimals (Practice Problems Included) | Math with Mr. JOrdering Decimals (Practice Problems Included) | Math with Mr. JMath with Mr. JPlay from here Loop
  15. 15Fun with Fractions & Decimals: Rock 'N LearnFun with Fractions & Decimals: Rock 'N LearnRock 'N LearnPlay from here Loop
  16. 16Relating Fractions to Decimals Song | Decimal Notation | 4th GradeRelating Fractions to Decimals Song | Decimal Notation | 4th GradeNumberockPlay from here Loop
  17. 17Decimal Place Value Song | Tenths and Hundredths | 5th GradeDecimal Place Value Song | Tenths and Hundredths | 5th GradeNumberockPlay from here Loop
  18. 18Expanded Form with Decimals | Place Value Song for KidsExpanded Form with Decimals | Place Value Song for KidsNumberockPlay from here Loop
  19. 19Comparing Decimals | Less Than and Greater Than Decimals | Grades 4-6Comparing Decimals | Less Than and Greater Than Decimals | Grades 4-6NumberockPlay from here Loop

What does this 4th grade decimals unit cover?

It introduces decimal place value, tenths and hundredths with models, writing fractions like 7/10 and 35/100 as decimals, then comparing and ordering decimals. By the end a child should explain why 0.5 is greater than 0.45 and write 62/100 as 0.62.

How does RepeatWatch help with decimals?

Set an A–B loop on one decimal model so your child sees tenths and hundredths several times. Slow to 0.75× when reading decimals aloud, save lesson parts on keys 1–9, and use Repeat one on a Numberock decimal song.

Frequently asked questions

What grade learns decimals?

In the US, decimals to hundredths are usually introduced in 4th grade (ages 9–10) by linking them to fractions. Thousandths and decimal operations follow in 5th grade. Grade levels vary by country and school.

Why do children think 0.45 is bigger than 0.5?

They read 45 as bigger than 5. Writing 0.5 as 0.50, or shading a hundredths grid, shows that 50 hundredths is more than 45 hundredths. The comparing lessons here use both methods. Stop after N loops and practice on paper.