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Adding Three Numbers

Free printable grades 1–2 addition worksheet with answer key. Adding Three Numbers. PDF download — no signup required.

📄 Free PDF ✅ Answer Key 🖨️ Print-Ready
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2 pages
AdditionGrades 1–3Free Printable
Name: __________________    Date: __________

➕ Adding Three Numbers

📖 Concept

Add the first two, then add the third. 3 + 4 + 6 = (3+4) + 6 = 7 + 6 = 13.

✏️ Three-Number Addition

1. 3 + 4 + 6 =
2. 5 + 7 + 3 =
3. 9 + 2 + 8 =
4. 6 + 6 + 5 =
✅ Answers: 13,15,19,17
📖 Concept guide ➕ Practice problems ✅ Answer key 🖨️ A4 print-ready

📌 Also try: Subtraction Worksheets — same grade level, complementary skill

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About This Adding Three Numbers — Addition

This free printable adding three numbers worksheet gives students focused practice with joining groups and building addition fluency. Problems are sequenced from simple to more challenging so learners gain confidence before they meet larger numbers and word problems. Print on US Letter or A4 paper, and use the included answer key to check work quickly.

What Students Will Learn

Students learn to combine quantities accurately and flexibly. They practice basic facts, then apply them to two- and three-digit problems, spotting patterns like doubles and near-doubles. Repeated practice builds the automatic recall that later makes subtraction, multiplication, and multi-step problem solving much easier.

How Teachers Can Use This Worksheet

How Parents and Homeschoolers Can Use This Worksheet

Keep a small bowl of coins or dried beans nearby so your child can physically build each problem before writing it. Start with the easier rows and stop before frustration sets in — a short, daily session beats a long weekly one. When a mistake appears, ask "how did you get that?" instead of jumping to the answer; the explanation usually reveals whether it is a counting slip or a concept gap.

Skills Covered

addition facts · mental math · number sense · carrying/regrouping · problem solving

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