Adding 3 Whole Numbers within 20 Worksheet
- Grades
- Grades 1–2
- File type
- Preparation
- Print ready
- Subject
- Addition, Addition and Subtraction, Math
- Resource types
- Worksheets
- Preparation
- Print ready
From the author
About this resource
This Adding 3 Whole Numbers within 20 Worksheet is a great resource for teachers who want to help their students build their fact fluency. This worksheet can help students practice adding three whole numbers together to find the sum.
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In the classroom
Teaching tips & learning objectives
Learning objectives
Students will add three single-digit whole numbers to find sums within 20.
Teaching tips
Use as a short warm-up or exit ticket once students are comfortable adding two addends, as a bridge toward three-addend fluency.
Have students circle the two addends they combine first, reinforcing that addition can be grouped in any order to reach the same sum.
Pair with the included answer key for a quick self-check station or partner-check activity.
Skills covered
Adding three single-digit whole numbers
Addition fact fluency within 20
Good to know
Questions teachers ask about this resource
How many addends does each problem use?
Each of the 20 problems adds three single-digit whole numbers together, with every sum landing at 20 or below.
Is a solutions page included?
Yes, a full solutions page shows the worked sum for all 20 problems, making the sheet suitable for independent practice or a self-check.
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Resource details
Core concepts
Core concepts
Core concepts
Addition within 20
Associative property of addition (grouping three addends)
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