Study Guide — 5.NBT.A.3
Read, write, and compare decimals to thousandths
Connect decimals to fractions and place value — tenths and hundredths.
What this standard means
- Read and write decimals to thousandths using base-ten numerals, number names, and expanded form, e.g., 347.392 = 3 × 100 + 4 × 10 + 7 × 1 + 3 × (1/10) + 9 × (1/100) + 2 × (1/1000).
- Compare two decimals to thousandths based on meanings of the digits in each place, using >, =, and < symbols to record the results of comparisons.
- Apply read, write, and compare decimals to thousandths with models and explanation
- Reads and writes decimals to hundredths
_See printable PDF for diagram._
How to use the 20 practice sets
| Sets | When to use | | --- | --- | | 1–5 | Intro — explore together, short written items | | 6–10 | Core skills — diagrams and written practice | | 11–15 | Mixed review — explain thinking | | 16–20 | Stretch — word problems and mastery tasks |
Pacing: 10–15 minutes per session.
How to practice
1. Use base-ten blocks for tenths and hundredths 2. Write decimals on a number line 3. Compare decimals place by place
_See printable PDF for diagram._
Common mistakes
- Longer decimal means larger
- Misplacing the decimal point
Review and practice tests
1. Start Review 1/10 when sets 1–3 feel comfortable. 2. Move up one review level with little help. 3. Use Practice Test 4/10–6/10 for mid-standard checks. 4. Practice Test 10/10 is the mastery bar for 5.NBT.A.3.
- [ ] Reads and writes decimals to hundredths
- [ ] Compares decimals using place value
- [ ] Relates decimals to fractions
Materials for this standard
- Practice Problems — 20 printable sets
- Review — 10 difficulty levels
- Practice Test — 10 difficulty levels
- Answer key — for parents and tutors