Answer Key — 3.OA.D.9

For parents and tutors

Do not share with students before practice tests.

Practice Problems — Sets 1–10

| Set | Guidance | | --- | --- | | Set 1 | Identify arithmetic patterns (including patterns in the addition tabl… — verify written work and accept reasonable drawings. | | Set 2 | Identify arithmetic patterns (including patterns in the addition tabl… — verify written work and accept reasonable drawings. | | Set 3 | Identify arithmetic patterns (including patterns in the addition tabl… — verify written work and accept reasonable drawings. | | Set 4 | Identify arithmetic patterns (including patterns in the addition tabl… — verify written work and accept reasonable drawings. | | Set 5 | Identify arithmetic patterns (including patterns in the addition tabl… — verify written work and accept reasonable drawings. | | Set 6 | Identify arithmetic patterns (including patterns in the addition tabl… — verify written work and accept reasonable drawings. | | Set 7 | Identify arithmetic patterns (including patterns in the addition tabl… — verify written work and accept reasonable drawings. | | Set 8 | Identify arithmetic patterns (including patterns in the addition tabl… — verify written work and accept reasonable drawings. | | Set 9 | Identify arithmetic patterns (including patterns in the addition tabl… — verify written work and accept reasonable drawings. | | Set 10 | Identify arithmetic patterns (including patterns in the addition tabl… — verify written work and accept reasonable drawings. |

Practice Problems — Sets 11–20

| Set | Guidance | | --- | --- | | Set 11 | Identify arithmetic patterns (including patterns in the addition tabl… — verify written work and accept reasonable drawings. | | Set 12 | Identify arithmetic patterns (including patterns in the addition tabl… — verify written work and accept reasonable drawings. | | Set 13 | Identify arithmetic patterns (including patterns in the addition tabl… — verify written work and accept reasonable drawings. | | Set 14 | Identify arithmetic patterns (including patterns in the addition tabl… — verify written work and accept reasonable drawings. | | Set 15 | Identify arithmetic patterns (including patterns in the addition tabl… — verify written work and accept reasonable drawings. | | Set 16 | Identify arithmetic patterns (including patterns in the addition tabl… — verify written work and accept reasonable drawings. | | Set 17 | Identify arithmetic patterns (including patterns in the addition tabl… — verify written work and accept reasonable drawings. | | Set 18 | Identify arithmetic patterns (including patterns in the addition tabl… — verify written work and accept reasonable drawings. | | Set 19 | Identify arithmetic patterns (including patterns in the addition tabl… — verify written work and accept reasonable drawings. | | Set 20 | Identify arithmetic patterns (including patterns in the addition tabl… — verify written work and accept reasonable drawings. |

Review tiers 1–10

• Checklists are parent-judged.
• Written items: verify against practice set patterns.
• Standard text: Identify arithmetic patterns (including patterns in the addition table or multiplication table), and explain them using properties of operations. For example, observe that 4 times a number is always even, and explain why 4 times a number can be decomposed into two equal addends.

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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