Free printable practice
Add 2 Digit 1 Digit Numbers Missing Addend No Regrouping Practice Activities
Grade 1 worksheets help children find missing addends in 2-digit plus 1-digit addition facts without regrouping.
Free printable worksheet PDFs
Preview every available page, then download the free worksheet PDF for home, homeschool, tutoring, or classroom practice.
Preview the exact activity before downloading it.
Practice that builds confidence
What this skill builds
These Grade 1 math worksheets help children solve missing addend problems with a 2-digit number and a 1-digit number, without regrouping. Learners practise equations such as 42 + __ = 46 or __ + 3 = 58 by focusing on the ones place and the unchanged tens digit.
The printable activities include clear addition sentences with blanks in different positions. Children build confidence reading equations, identifying the known addends and sum, and choosing the number that makes the addition statement true.
Missing addend addition asks children to think beyond “add and answer.” In these worksheets, the total is given and one part is hidden. Because there is no regrouping, the ones digits do the main work: in 35 + __ = 39, children compare 5 and 9 to find 4, while the tens digit stays 3.
How the problems progress
A child may first see blanks after the plus sign, such as 21 + __ = 25. Then the blank may appear at the start, as in __ + 6 = 48, where the missing number is the 2-digit addend. The numbers are chosen so children do not need to carry into the tens place. This keeps attention on place value, counting on, and the meaning of the equal sign.
Parent routine for home practice
Start with one row of problems. Ask your child to circle the total, underline the known addend, and say what is missing: “I know 34 plus something equals 37.” Have them use fingers, a number line, or mental counting from 34 to 37. After writing the answer, they should read the full equation aloud to check: “34 plus 3 equals 37.”
Classroom uses for teachers
Teachers can use these pages for morning work, addition centers, small-group reteaching, or quick checks after a lesson on place value addition. The format is also useful for math talks: invite students to explain whether they counted on, compared ones digits, or used a related subtraction fact.
Common errors to watch for
Some children add all the visible digits and ignore the blank. Others may change the tens digit even though no regrouping is needed. Watch for reversed thinking in problems like __ + 5 = 67; students should find 62, not 72 or 5. Encourage careful reading of the entire equation before solving.
Free printable PDF download
Use this grade 1 missing addend addition worksheet page to preview the activity, print it, or download it as a PDF for quick practice. It works well for homework, homeschool lessons, tutoring, morning work, revision, and classroom centers.
Answers and answer key support
After the child completes the worksheet independently, parents and teachers can use the answer support or answer key information to check the work, review mistakes, and choose the next practice step.
Why iBloom worksheets help
The practice stays tightly focused on 2-digit plus 1-digit missing addends without regrouping, so children can master one idea at a time. A helpful child strategy is: “Look at the tens, compare the ones, then reread the equation.” This keeps the work concrete, accurate, and easy to check.
Helpful answers
Frequently asked questions
What does missing addend mean in these Grade 1 worksheets?
A missing addend is the hidden number in an addition equation. For example, in 43 + __ = 47, children find the number that must be added to 43 to make 47.
Do these problems require regrouping or carrying?
No. The problems are designed so the ones place does not make a ten. This lets children focus on finding the missing part without carrying into the tens place.
How can my child solve 2-digit plus 1-digit missing addend problems?
A simple method is to look at the ones digits and count on. In 52 + __ = 56, count 53, 54, 55, 56 to find that the missing addend is 4.
Why are some blanks at the beginning of the equation?
Blanks in different positions help children understand that addition equations can be read flexibly. In __ + 4 = 38, they learn to find the unknown 2-digit addend that makes the total correct.
What mistakes should I watch for during practice?
Watch for children adding the known numbers without using the total, changing the tens digit unnecessarily, or writing the total in the blank. Ask them to reread the completed equation to check it.
Is this grade 1 missing addend addition worksheet free?
Yes. You can preview it for free and use the printable worksheet for home or classroom practice.
Can I download this grade 1 missing addend addition worksheet as a PDF?
Yes. Use the worksheet download option to save a printable PDF, or print the worksheet directly from the page.
Does this grade 1 missing addend addition worksheet include answers or an answer key?
When the activity has fixed answers, iBloom includes answer support so parents and teachers can check the completed worksheet.