Skip to main content

KiwiBee printable

Write number sentences for word problems with start unknown - up to 20

Free printable Grade 1 math worksheet for "Write number sentences for word problems with start unknown - up to 20" — practice addition and subtraction word problems up to 20. No-prep, print or assign online.

Write number sentences for word problems with start unknown - up to 20 — free printable Grade 1 math worksheetOpen in KiwiBee to download

This worksheet provides grade 1 students with word problems focused on addition and subtraction where the starting number is unknown, reinforcing their ability to write corresponding number sentences up to 20. Teachers can use this resource to strengthen students' problem-solving skills and comprehension of number relationships in real-world contexts. Ideal for classroom practice or homework, it supports mastery of early algebraic thinking within the addition and subtraction domain.

Math
Number Sense & Operations
Grade 1
Worksheets
Ages 6–7
medium

Learning objectives

  • Write addition and subtraction number sentences to represent word problems with an unknown starting number up to 20
  • Interpret word problems by identifying the unknown start quantity and expressing it as a number sentence
  • Demonstrate understanding of addition and subtraction concepts by solving start unknown problems within 20

How to use this worksheet

  1. Click “Download Worksheet” and sign in with Google or email to get the PDF instantly.
  2. Print at home or in class for Grade 1; it's no-prep, with no extra materials needed.
  3. Hand it out as classwork, homework, or a quick warm-up.

Likes & comments

See what other teachers think and share a helpful note.

Loading likes and comments…

Create more worksheets in our Worksheet Studio

Generate fresh worksheets for any grade, topic, and language — free.

Open the Worksheet Studio

Related worksheets

Match word problems to addition and subtraction sentences - up to 20

Match word problems to addition and subtraction sentences - up to 20

Worksheets
medium
Ages 6–7
Word problems involving addition and subtraction without comparisons - up to 20

Word problems involving addition and subtraction without comparisons - up to 20

Worksheets
medium
Ages 6–7
Word problems with both addends unknown - up to 20

Word problems with both addends unknown - up to 20

Worksheets
medium
Ages 6–7
Word problems with change unknown - up to 20

Word problems with change unknown - up to 20

Worksheets
medium
Ages 6–7
Word problems with start unknown - up to 20

Word problems with start unknown - up to 20

Worksheets
medium
Ages 6–7
Word problems with sum or difference unknown - up to 20

Word problems with sum or difference unknown - up to 20

Worksheets
medium
Ages 6–7
Write number sentences for word problems - up to 20

Write number sentences for word problems - up to 20

Worksheets
medium
Ages 6–7
Write number sentences for word problems with change unknown - up to 20

Write number sentences for word problems with change unknown - up to 20

Worksheets
medium
Ages 6–7