☀️ Summer Missing Numbers

Worksheets › Summer worksheets › Grade 1 › Math

About this grade 1 worksheet

Free summer math worksheet for 1st grade: find the missing number in each fact. Printable, original, with an answer key where needed. Skill: Finding the unknown number. Level: Grade 1 — also suits Year 2 (UK).

For teachers: skills & standards

• CCSS 1.OA.C.6: Add and subtract within 20, with fluency within 10
• Works as a morning-work page, a centre/station activity, homework or an early-finisher task.

Frequently asked questions

Is this worksheet free?

Yes — it is free to print for home or the classroom. Sign in with a free Pagine account, then use the Print button or save it as a PDF.

What age is it for?

It is designed for Grade 1 (ages 6–7), but use it with any child who is ready.

What skills does it build?

Finding the unknown number.

Where can I find grade 1 books to read with it?

Pagine's free library has 20,000+ children's books you can read in the Pagine e-reader or the free Pagine app — sorted by age and grade, with free audiobooks too.

More summer math worksheets

Summer Addition Within 20 · Summer Subtraction Within 20 · Summer Word Problems · Summer Tens and Ones · Summer Compare Two-Digit Numbers · Summer Tell Time: Hour & Half Hour · Summer Picture Graph Questions · Summer Skip Counting by 2s, 5s and 10s · Summer Doubles and Near Doubles

All 50 summer worksheets for Grade 1 → · Summer books & activities →

📚 Read along: 20,000+ free books in the Pagine e-reader

Pair this grade 1 worksheet with a story. Pagine's free library has 20,000+ children's books — early readers, picture books and first chapter books, classics and free audiobooks — that you can read right in the Pagine e-reader on any phone, tablet or computer, with adjustable text size and night mode. No ads.

Browse free grade 1 books → · Grade 1 reading level · Free audiobooks · Grade 1 sight words

📱 Get the free Pagine app — log every book your child reads (scan the barcode or search), set reading goals, and watch streaks and badges grow. Download on the App Store · Get it on Google Play