Answer Key — HSN.RN.B.3
For parents and tutors
Do not share with students before practice tests.
Practice Problems — Sets 1–10
| Set | Guidance | | --- | --- | | Set 1 | Explain why the sum or product of two rational numbers is rational; t… — verify written work and accept reasonable drawings. | | Set 2 | Explain why the sum or product of two rational numbers is rational; t… — verify written work and accept reasonable drawings. | | Set 3 | Explain why the sum or product of two rational numbers is rational; t… — verify written work and accept reasonable drawings. | | Set 4 | Explain why the sum or product of two rational numbers is rational; t… — verify written work and accept reasonable drawings. | | Set 5 | Explain why the sum or product of two rational numbers is rational; t… — verify written work and accept reasonable drawings. | | Set 6 | Explain why the sum or product of two rational numbers is rational; t… — verify written work and accept reasonable drawings. | | Set 7 | Explain why the sum or product of two rational numbers is rational; t… — verify written work and accept reasonable drawings. | | Set 8 | Explain why the sum or product of two rational numbers is rational; t… — verify written work and accept reasonable drawings. | | Set 9 | Explain why the sum or product of two rational numbers is rational; t… — verify written work and accept reasonable drawings. | | Set 10 | Explain why the sum or product of two rational numbers is rational; t… — verify written work and accept reasonable drawings. |
Practice Problems — Sets 11–20
| Set | Guidance | | --- | --- | | Set 11 | Explain why the sum or product of two rational numbers is rational; t… — verify written work and accept reasonable drawings. | | Set 12 | Explain why the sum or product of two rational numbers is rational; t… — verify written work and accept reasonable drawings. | | Set 13 | Explain why the sum or product of two rational numbers is rational; t… — verify written work and accept reasonable drawings. | | Set 14 | Explain why the sum or product of two rational numbers is rational; t… — verify written work and accept reasonable drawings. | | Set 15 | Explain why the sum or product of two rational numbers is rational; t… — verify written work and accept reasonable drawings. | | Set 16 | Explain why the sum or product of two rational numbers is rational; t… — verify written work and accept reasonable drawings. | | Set 17 | Explain why the sum or product of two rational numbers is rational; t… — verify written work and accept reasonable drawings. | | Set 18 | Explain why the sum or product of two rational numbers is rational; t… — verify written work and accept reasonable drawings. | | Set 19 | Explain why the sum or product of two rational numbers is rational; t… — verify written work and accept reasonable drawings. | | Set 20 | Explain why the sum or product of two rational numbers is rational; t… — verify written work and accept reasonable drawings. |
Review tiers 1–10
- Checklists are parent-judged.
- Written items: verify against practice set patterns.
- Standard text: Explain why the sum or product of two rational numbers is rational; that the sum of a rational number and an irrational number is irrational; and that the product of a nonzero rational number and an irrational number is irrational.
Practice test scoring
| Tier | Pass guidance | | --- | --- | | 1–3 | Most oral tasks smooth; majority of written correct | | 4–6 | 7/10+ total with clear understanding | | 7–8 | 9/12+ with explanations | | 9–10 | Near-perfect; ready to move on |
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