Answer Key — K.CC.A.1
For parents and tutors
Do not share with students before they complete practice tests.
Practice Problems — Sets 1–20
| Set | Guidance | | --- | --- | | Set 1 | Sequences from 1; tens fill-in 30/40; patterns: add 1 / add 10 | | Set 2 | Sequences from 2; tens fill-in 30/40; patterns: add 1 / add 10 | | Set 3 | Sequences from 3; tens fill-in 30/40; patterns: add 1 / add 10 | | Set 4 | Sequences from 4; tens fill-in 30/40; patterns: add 1 / add 10 | | Set 5 | Sequences from 5; tens fill-in 30/40; patterns: add 1 / add 10 | | Set 6 | Sequences from 6; tens fill-in 30/40; patterns: add 1 / add 10 | | Set 7 | Sequences from 7; tens fill-in 30/40; patterns: add 1 / add 10 | | Set 8 | Sequences from 8; tens fill-in 30/40; patterns: add 1 / add 10 | | Set 9 | Sequences from 9; tens fill-in 30/40; patterns: add 1 / add 10 | | Set 10 | Sequences from 10; tens fill-in 30/40; patterns: add 1 / add 10 |
Practice Problems — Sets 11–20
| Set | Guidance | | --- | --- | | Set 11 | Sequences from 11; tens fill-in 30/40; patterns: add 1 / add 10 | | Set 12 | Sequences from 12; tens fill-in 30/40; patterns: add 1 / add 10 | | Set 13 | Sequences from 13; tens fill-in 30/40; patterns: add 1 / add 10 | | Set 14 | Sequences from 14; tens fill-in 30/40; patterns: add 1 / add 10 | | Set 15 | Sequences from 15; tens fill-in 30/40; patterns: add 1 / add 10 | | Set 16 | Sequences from 16; tens fill-in 30/40; patterns: add 1 / add 10 | | Set 17 | Sequences from 17; tens fill-in 30/40; patterns: add 1 / add 10 | | Set 18 | Sequences from 18; tens fill-in 30/40; patterns: add 1 / add 10 | | Set 19 | Sequences from 19; tens fill-in 30/40; patterns: add 1 / add 10 | | Set 20 | Sequences from 20; tens fill-in 30/40; patterns: add 1 / add 10 |
Review tiers 1–10
- Checklists are parent-judged — mark when skill is shown without help.
- Written items: verify sequences, numerals, and pattern explanations.
Practice test scoring
| Tier | Pass guidance | | --- | --- | | 1–3 | Most oral tasks smooth; 4/6+ on written | | 4–6 | 7/10+ total with clear counting | | 7–8 | 9/12+ with explanations | | 9–10 | Near-perfect; ready for next standard |