Free · Printable · TEKS 3.5A,3.5B,3.5D,3.5E
Free Grade 3 Algebraic Reasoning & Patterns Worksheets
991+ Texas TEKS-aligned practice questions on algebraic reasoning & patterns. Print at home or practice online with a built-in AI tutor. No sign-up. No paywall.
Looking for algebraic reasoning & patterns worksheets for Grade 3? This page has 991+ TEKS-aligned practice questions on this exact topic, mapped to Texas TEKS 3.5A,3.5B,3.5D,3.5E. Every question goes through an AI quality gate before publishing — no typos, no wrong answer keys, no factually-broken explanations.
Represent and solve problems with equations, and identify number patterns.
Below: a sample of 8 questions with answers and explanations so you can see what's on the worksheet before you print. Each question has the correct choice marked and a one-line "why" so kids who get it wrong understand the fix.
What number makes this equation true? □ + 17 = 45
- 29
- 30
- 28 ✓
- 27
Why: Use the inverse: 45 − 17 = 28. Check: 28 + 17 = 45. ✓
37 take away what number gives 17?
- 22
- 20 ✓
- 21
- 19
Why: Subtract: 37 − 17 = 20.
17 − 6 = ?
- 12
- 11 ✓
- 13
- 10
Why: Subtract: 17 − 6 = 11.
Find the missing number: ? + 82 = 144
- 63
- 64
- 62 ✓
- 61
Why: Subtract: 144 − 82 = 62.
What number makes this true? 50 + ? = 89
- 39 ✓
- 40
- 38
- 41
Why: Subtract: 89 − 50 = 39.
What number makes this true? 57 + ? = 108
- 52
- 51 ✓
- 53
- 50
Why: Subtract: 108 − 57 = 51.
77 + ? = 105. What number goes in the box?
- 29
- 27
- 30
- 28 ✓
Why: Subtract: 105 − 77 = 28.
What number makes this true? 72 + ? = 96
- 24 ✓
- 26
- 23
- 25
Why: Subtract: 96 − 72 = 24.
Common questions
Are these worksheets really free?
Yes. Free to print, free to practice online. No email, no sign-up, no paywall. We make money from optional paid features (toy redemption with real cents), not from the worksheets.
What is TEKS 3.5A,3.5B,3.5D,3.5E?
TEKS 3.5A,3.5B,3.5D,3.5E is the Grade 3 Algebraic Reasoning & Patterns standard from the Texas Essential Knowledge and Skills. Represent and solve problems with equations, and identify number patterns.
How many total questions are available?
991+ questions in our Grade 3 Algebraic Reasoning & Patterns bank. Print as many 20-question worksheets as you like — each one pulls a fresh set so your kid doesn't see the same questions twice.
Where do these questions come from?
Generated by our AI pipeline, then quality-gated by two independent models (gpt-4o for content review, Claude Sonnet 4.5 for math verification) before publishing. Every question is tagged to TEKS 3.5A,3.5B,3.5D,3.5E and modeled on real STAAR item shapes.