Grade 1 Subtraction: Subtraction within 20

Generate a printable Grade 1 subtraction worksheet for this skill. Change the difficulty, layout or problem count below, then print the worksheet or its answer key.

What students practice: Differences within 10 / within 20 are exactly the subtract-within-20 standard.

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What to practice

GradeDifficulty

OperationSkill

Worksheet options

Number of problemsLayout

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Worksheet preview — matches what “Print worksheet” produces.Grade 1 · Subtraction · Subtraction within 20 · Standard

Grade 1 · Subtraction

Subtraction Within 20

Name: Class: Date:

Set 1 · Grade 1 · Subtraction

Example problems by difficulty

Real samples from this generator. Every worksheet is a fresh random set, so yours will differ.

Easy

10 - 4 = ___
Answer: 6
10 - 10 = ___
Answer: 0

Standard

14 - 10 = ___
Answer: 4
18 - 18 = ___
Answer: 0

Challenge

17 - 11 = ___
Answer: 6
17 - 1 = ___
Answer: 16

Where this skill fits

Previous skill: Subtraction within 10
Next skill: Missing numbers
All grades: Subtraction worksheets, Grades 1–5

Related Common Core standards

1.OA.C.6 — Add and subtract within 20.

The task matches what these standards describe at this grade. Common Core–informed practice; not a claim of official alignment.