Study Guide — 1.NBT.A.1

Count to 120, starting at any number less than 120

Compare written numerals using >, <, and = and explain the comparison.

What this standard means

• Count to 120, starting at any number less than 120. In this range, read and write numerals and represent a number of objects with a written numeral.
• Apply count to 120, starting at any number less than 120 with models and explanation
• Writes >, <, or = correctly

_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. Use a number line to compare positions 2. Read comparisons aloud: 5 is less than 8 3. Start with numbers under 20, then expand

_See printable PDF for diagram._

Common mistakes

• Reversing the symbol direction
• Comparing digits instead of values

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 1.NBT.A.1.

• [ ] Writes >, <, or = correctly
• [ ] Compares two-digit numbers using place value
• [ ] Orders a set of numerals

Materials for this standard

• Practice Problems — 20 printable sets
• Review — 10 difficulty levels
• Practice Test — 10 difficulty levels
• Answer key — for parents and tutors