Study Guide — 4.MD.C.7
Recognize angle measure as additive
Describe and compare measurable attributes such as length, weight, and capacity.
What this standard means
- Recognize angle measure as additive. When an angle is decomposed into non-overlapping parts, the angle measure of the whole is the sum of the angle measures of the parts. Solve addition and subtraction problems to find unknown angles on a diagram in real world and mathematical problems, e.g., by using an equation with a symbol for the unknown angle measure.
- Apply recognize angle measure as additive with models and explanation
- Names measurable attributes
_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. Sort objects by one attribute at a time 2. Use comparison words: longer, heavier, holds more 3. Draw and label comparisons
_See printable PDF for diagram._
Common mistakes
- Comparing unrelated attributes
- Using size when weight is asked
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 4.MD.C.7.
- [ ] Names measurable attributes
- [ ] Compares objects directly
- [ ] Uses comparison vocabulary correctly
Materials for this standard
- Practice Problems — 20 printable sets
- Review — 10 difficulty levels
- Practice Test — 10 difficulty levels
- Answer key — for parents and tutors