Study Guide — 2.MD.B.5
Use addition and subtraction within 100 to solve word problems involv…
Measure length, weight, capacity, or area using appropriate units and tools.
What this standard means
- Use addition and subtraction within 100 to solve word problems involving lengths that are given in the same units, e.g., by using drawings (such as drawings of rulers) and equations with a symbol for the unknown number to represent the problem.
- Apply use addition and subtraction within 100 to solve word problems involv… with models and explanation
- Chooses appropriate units
_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. Measure real objects with rulers or scales 2. Estimate before measuring 3. Convert within the same system when required
_See printable PDF for diagram._
Common mistakes
- Gaps or overlaps when measuring length
- Wrong unit for the attribute
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 2.MD.B.5.
- [ ] Chooses appropriate units
- [ ] Measures accurately with no gaps
- [ ] Solves measurement word problems
Materials for this standard
- Practice Problems — 20 printable sets
- Review — 10 difficulty levels
- Practice Test — 10 difficulty levels
- Answer key — for parents and tutors