Add three numbers
Free printable Grade 1 math worksheet for "Add three numbers" — practice addition up to 20. No-prep, print or assign online.
This worksheet provides practice for Grade 1 students to add three numbers with sums up to 20. Teachers can use it to reinforce addition skills and assess students' ability to handle multiple addends in a single problem. It supports building foundational arithmetic fluency in early learners.
Learning objectives
- Add three numbers with sums up to 20 accurately
- Demonstrate understanding of addition by combining three single-digit numbers
- Solve medium-difficulty addition problems involving three addends
Answer Key
How to use this worksheet
- Click “Download Worksheet” to get the PDF — free with a KiwiBee account (up to 50 downloads a month).
- Print at home or in class for Grade 1; it's no-prep, with no extra materials needed.
- Use the included answer key to mark it in seconds.
Frequently asked questions
Is the “Add three numbers” worksheet free?
Yes. “Add three numbers” is a free printable Math worksheet. Sign in with a free KiwiBee account to download the PDF — it includes up to 50 downloads a month.
What grade or age is this Math worksheet for?
It's designed for Grade 1 (ages 6–7), covering Addition up to 20.
Does it come with an answer key?
Yes — a matching answer key is included so you can grade it in seconds.
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