## Free addition worksheets from K5 Learning

Our 3rd grade addition worksheets include both "mental addition problems" intended for students to solve in their heads and multi-digit column form addition questions giving practice in computational skills.   These grade 3 math worksheets complement our online math program.

Example

Complete one hundred (missing addend)   ___ + 85 = 100
20 + 39 = ___
Add whole tens to 2-digit numbers (missing addend)   90 + ___ = 141

94 + 7 = ___
Add a 1-digit number to a 2-digit number - missing addend   91 + ___ = 96

Adding one 2-digit and two 1-digit numbers   4 + 2 + 17 =
865 + 5 = ___

Adding two whole tens and two 1-digit numbers   70 + 7 = 8 + 10 =
60 + 50 + 40 = ___
40+10+10+60= ___
300 + 100 = ___
Adding to complete whole thousands   7300 + ___ = 9000

Adding whole thousands and whole hundreds   7100 + 300 =
Adding whole thousands to another number   6349 + 4000 = ___

Adding two 2-digit numbers, no carrying

22

+ 23

38

+ 27

Adding two 3-digit numbers, no carrying

123

+ 234

216

+ 955

342

+ 123

+ 456

456

+ 123

+ 567

+ 890

5,432

+ 1,543

9,002

+ 1,004

+ 2,567

1,111

+ 2,222

+ 3,333

+ 4,444

2nd page

Multiple versions of
each worksheet

All worksheets
are pdf documents

## Recommended Workbooks

Browse our bookstore where we sell reading and math workbooks. The workbooks contain both instruction and exercises (with answer keys) and can be immediately downloaded and printed.  Ideal for independent or parent led-studying.

## What is K5?

K5 Learning is an online reading and math program for kids in kindergarten to grade 5. Kids work at their own level and their own pace through a personalized program of reading and math lessons; each lesson is accompanied by customized printable worksheets for further study.

Designed principally for after school study and summer study, K5 is also used by homeschoolers, special needs and gifted kids. K5 helps your children build good study habits and excel in school.

## Free trial

K5 Learning offers a 14-day free trial of its complete program. The free trial includes optional free reading and math assessments.