Grade 3 addition worksheets
In third grade, children practice mental additions with two-digit numbers and certain easy type of additions with three-digitn umbers. They also add several 3- and 4-digit numbers with regrouping using the standard addition algorithm (where one number is written under the other).
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The problem sheets are randomly generated, so you will get a different one just by refreshing the page in your browser (press F5).
All worksheets come with an answer key.
Jump to worksheets for:
Mental addition
- Complete one hundred (missing addend)
- Add two 2-digit numbers - one addend is a whole ten
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Add two 2-digit numbers - one addend is a whole ten - missing addend
- Add a 1-digit number to a 2-digit number
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Add a 1-digit number and a 2-digit number - missing addend
- Add a 2-digit number and two 1-digit numbers
- Add a 3-digit number and a 1-digit number
- Add two whole tens and two 1-digit numbers
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Add two whole tens and two 1-digit numbers - missing addend
- Adding whole tens (3 addends)
- Adding whole tens (4 addends)
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Adding whole tens (3 addends) - missing addend
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Adding whole tens (4 addends) - missing addend
- Adding whole hundreds (2 addends)
- Adding whole hundreds (3 addends)
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Add whole hundreds - missing addend
- Completing a whole thousand (whole hundreds are missing)
- Adding two numbers with thousands and whole hundreds
- Adding whole thousands to another number
Add in columns
- Adding two 2-digit numbers
- Adding two 3-digit numbers
- Adding three 3-digit numbers
- Add three 3-digit numbers in columns- write the numbers one under the other yourself
- Adding four 3-digit numbers
- Add four 3-digit numbers in columns - write the numbers one under the other yourself
- Adding two 4-digit numbers
- Adding three 4-digit numbers
- Add three 4-digit numbers in columns - write the numbers one under the other yourself
- Adding four 4-digit numbers
See also
Grade 3 subtraction worksheets
Addition worksheets for grade 2
Grade 3 multiplication worksheets
2nd grade
3rd grade
4th grade
5th grade
6th grade
7th grade
Addition worksheets
Number bonds worksheets
Number Charts
Multiplication worksheets
Division worksheets
Basic operations: addition,
subtraction, multiplication
and division (incl. integers)
Roman numerals
Place value &
scientific notation
Rounding Time (clock)
Customary measuring units
Metric measuring units
Classify quadrilaterals
Area & perimeter of rectangles
Area of triangles & polygons
Coordinate grid, moves, reflections
Circle
US Money
Canadian Money
Australian Money
British Money
European Money
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Fraction worksheets 1
Fraction worksheets 2
Fraction addition
Comparing fractions
Equivalent fractions
Prime factorization / factors
GCF / LCM
Fraction Calculator
Decimal multiplication
Decimal division
Fraction/Decimal
Rounding decimals
Percent/Decimal
Percentage of a number
Various percentage problems
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Order of operations
Variable expressions
Evaluate expressions
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Equation calculator
Equation editor