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Three Addends - Worksheet 1 - 1st Grade

Easy

Add three single-digit numbers (Easy)

15 problems · 10-15 minutes · Skills: addition, multi-step

About This Worksheet

This easy-level worksheet contains 15 problems designed for 1st Grade students practicing adding three numbers. Easy worksheets use simpler numbers and straightforward problem types to build confidence and reinforce foundational skills.

Adding three numbers requires students to think strategically about which numbers to add first, developing flexible mathematical thinking.

How to Solve: Worked Example

Example Problem: 2 + 1 + 3 = ___
Solution Steps:
  1. Add the first two numbers: 2 + 1 = 3.
  2. Then add the third number: 3 + 3 = 6.
Answer: 6
Tip: Look for pairs that make 10 or pairs that are easy to add first!
1
1 + 1 + 2 =
2
2 + 2 + 2 =
3
1 + 3 + 1 =
4
3 + 2 + 3 =
5
1 + 1 + 1 =
6
2 + 2 + 2 =
7
3 + 3 + 1 =
8
3 + 2 + 1 =
9
3 + 3 + 3 =
10
3 + 1 + 3 =
11
2 + 2 + 3 =
12
1 + 2 + 2 =
13
3 + 2 + 3 =
14
3 + 3 + 3 =
15
2 + 3 + 3 =

Answer Key

1. 42. 63. 54. 85. 36. 67. 78. 69. 910. 711. 712. 513. 814. 915. 8

Frequently Asked Questions

How do I download this three addends - worksheet 1 worksheet?

Click the "Download PDF / Print" button at the top of the worksheet. You can save it as a PDF or print it directly. The answer key will be on a separate page.

How do I find worksheets at different difficulty levels?

Each subtopic has 10 worksheets: Worksheets 1-3 are Easy, 4-7 are Medium, and 8-10 are Hard. Start with Easy worksheets to build confidence, then progress to harder ones.

How many problems are on this worksheet?

This worksheet contains 15 problems. It typically takes 10-15 minutes to complete. An answer key with all solutions is included.