3rd Grade Math Worksheets - Addition

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Mental Addition

Add 1 & 2-digit numbers94 + 7 = ___
Add 1 & 2-digit numbers (missing addend)94 + ___ = 103
Complete one hundred (missing addends)___ + 85 = 100
  
Add a 2-digit & two 1-digit numbers4 + 2 + 17 =
Add 3 & 1-digit numbers865 + 5 = ___

Whole tens

Add whole tens to 2-digit numbers20 + 39 = ___
Add whole tens to 2-digit numbers (missing addend)20 + ___ = 59
  
Add two whole tens and two 1-digit numbers70 + 10 + 8 + 6 =__
Add whole tens (3 addends)60 + 50 + 40 = ___
Add whole tens (4 addends)60+50+40+30= ___

Whole hundreds

Add whole hundreds (2 addends)300 + 200 = ___
Add whole hundreds (3 addends)300+200+100 = ___
Add whole hundreds (missing addends)___ + 200 = 500
Add to complete whole thousands7300 + ___ = 9000 

Whole thousands

Add whole thousands and hundreds7000 + 300 =
Add whole thousands to a number4,000 + 3,601 = ___

Column-form addition

Add two 2-digit numbers, no carrying

22
+ 23
 

Add two 2-digit numbers

38
+ 27
 

Add two 3-digit numbers, no carrying

123
+ 234
 

Add two 3-digit numbers

216
+ 955
 

Add three 3-digit numbers

342
+ 123
+ 456
 

Add four 3-digit numbers

456
+ 123
+ 567
+ 890
 

Add two 4-digit numbers

5,432
+ 1,543
 

Add three 4-digit numbers

9,002
+ 1,004
+ 2,567
 

Add four 4-digit numbers

1,111
+ 2,222
+ 3,333
+ 4,444
 

Addition word problems

Grade 3 addition word problems

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