★Missing Numbers in Equations
Grade 1 Math Worksheet
NameDate
Write the missing number.
+ 4 = 11
17 - = 7
+ 1 = 19
3 + = 8
+ 16 = 20
14 + = 19
6 + = 13
2 + = 14
+ 1 = 14
13 - = 1
17 - = 3
- 7 = 9
12 + = 13
+ 3 = 10
- 4 = 7
- 3 = 14
- 5 = 13
11 - = 5
PencilGoGrade 1 · Math · Operations
1st Grade Missing Numbers in Equations worksheets
6 printable versionsOn LevelAbout 6 minutes eachFree · no account
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About this worksheet
A missing-number equation asks what number makes the sentence true, such as 5 - ____ = 3 or ____ + 4 = 9. It is the first step toward algebra, and it teaches that the equals sign means both sides are the same amount. It also lets a child use adding to check subtracting, because the missing number in 9 - ____ = 4 is found by asking what goes with 4 to make 9.
On this grade 1 worksheet each line is an addition or subtraction sentence with one gap, and your child writes the missing number on the line. The gap can be in any place. Support sheets stay within 10, and standard and challenge sheets go up to 20.
What your child will learn
- Find the missing number in an addition or subtraction sentence
- Understand that the equals sign means the same amount
- Use addition to check a subtraction
- Work out a missing number in any position
Common Core standard: 1.OA.D.8
Worked example
9 - ____ = 4. Think: 4 and what make 9? 4 + 5 = 9, so the missing number is 5.
Common mistake
Writing the answer to the whole sentence instead of the number that fits in the gap, or adding when the sentence subtracts.
Helpful hint
Say the sentence out loud with a question word in the gap, then think of the matching fact.
Questions parents ask
What is the most common mistake with missing numbers in equations?
Writing the answer to the whole sentence instead of the number that fits in the gap, or adding when the sentence subtracts.
How can I help my child with missing numbers in equations?
Say the sentence out loud with a question word in the gap, then think of the matching fact.
Are these 1st grade math worksheets free to print?
Yes. All 6 printable versions on this page are free to download and print, with no account needed.
Similar: Add and Subtract Word Problems · Three-Number Word Problems
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