@internet4classr I4C

# Add Two 3-Digit Numbers Within 1000.

These worksheets support the following Common Core State Standard:

CCSS.Math.Content.2.NBT.B.7

Add and subtract within 1000, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method. Understand that in adding or subtracting three-digit numbers, one adds or subtracts hundreds and hundreds, tens and tens, ones and ones; and sometimes it is necessary to compose or decompose tens or hundreds.

Publisher: National Governors Association Center for Best Practices, Council of Chief State School Officers, Washington D.C.

(Page last edited 10/16/2017)

There are 100 worksheets available on this topic. Click on the thumbnails below to preview and download the worksheets.

 Worksheet 20101 Worksheet 20102 Worksheet 20103 Worksheet 20104 Worksheet 20105 Worksheet 20106 Worksheet 20107 Worksheet 20108 Worksheet 20109 Worksheet 20110 Worksheet 20111 Worksheet 20112 Worksheet 20113 Worksheet 20114 Worksheet 20115 Worksheet 20116 Worksheet 20117 Worksheet 20118 Worksheet 20119 Worksheet 20120 Worksheet 20121 Worksheet 20122 Worksheet 20123 Worksheet 20124 Worksheet 20125 Worksheet 20126 Worksheet 20127 Worksheet 20128 Worksheet 20129 Worksheet 20130 Worksheet 20131 Worksheet 20132 Worksheet 20133 Worksheet 20134 Worksheet 20135 Worksheet 20136 Worksheet 20137 Worksheet 20138 Worksheet 20139 Worksheet 20140 Worksheet 20141 Worksheet 20142 Worksheet 20143 Worksheet 20144 Worksheet 20145 Worksheet 20146 Worksheet 20147 Worksheet 20148 Worksheet 20149 Worksheet 20150 Worksheet 20151 Worksheet 20152 Worksheet 20153 Worksheet 20154 Worksheet 20155 Worksheet 20156 Worksheet 20157 Worksheet 20158 Worksheet 20159 Worksheet 20160 Worksheet 20161 Worksheet 20162 Worksheet 20163 Worksheet 20164 Worksheet 20165 Worksheet 20166 Worksheet 20167 Worksheet 20168 Worksheet 20169 Worksheet 20170 Worksheet 20171 Worksheet 20172 Worksheet 20173 Worksheet 20174 Worksheet 20175 Worksheet 20176 Worksheet 20177 Worksheet 20178 Worksheet 20179 Worksheet 20180 Worksheet 20181 Worksheet 20182 Worksheet 20183 Worksheet 20184 Worksheet 20185 Worksheet 20186 Worksheet 20187 Worksheet 20188 Worksheet 20189 Worksheet 20190 Worksheet 20191 Worksheet 20192 Worksheet 20193 Worksheet 20194 Worksheet 20195 Worksheet 20196 Worksheet 20197 Worksheet 20198 Worksheet 20199 Worksheet 20200

Worksheet Usage:

1. Worksheets may be printed and reproduced free of charge by teachers, parents and students for classroom or homework usage.
3. This image and data thereon may not be sold, published online or in print by anyone else.

The answer keys corresponding to these worksheets may be found here: http://i4c.xyz/ya9vdr6f.

Teachers may request access to an answer key for all Internet4Classrooms printable practice sheets by going here: http://i4c.xyz/n89msyv.

Internet4classrooms is a collaborative effort by Susan Brooks and Bill Byles.