
Break apart a one-digit number to add
Free printable Grade 2 math worksheet for "Break apart a one-digit number to add" — practice addition strategies: two digits. No-prep, print or assign online.
This worksheet helps Grade 2 students practice breaking apart one-digit numbers to add them to two-digit numbers. Teachers can use it to reinforce addition strategies that improve mental math skills and number sense. It includes exercises that encourage students to decompose numbers and apply these strategies for more efficient addition.
Learning objectives
- Decompose a one-digit number into smaller addends to simplify addition problems
- Apply the strategy of breaking apart numbers to add two-digit numbers more efficiently
- Demonstrate understanding of addition strategies by solving problems using number decomposition
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 2; it's no-prep, with no extra materials needed.
- Use the included answer key to mark it in seconds.
Frequently asked questions
Is the “Break apart a one-digit number to add” worksheet free?
Yes. “Break apart a one-digit number to add” 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 2 (ages 7–8), covering Addition strategies: two digits.
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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