## CCSS.Math.Content.1.NBT.C.4 - Add within 100, including adding a two-digit number and a one-digit number, and adding a two-digit number and a multiple of 10, 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 and explain the reasoning used. Understand that in adding two-digit numbers, one adds tens and tens, ones and ones; and sometimes it is necessary to compose a ten.

Authors: National Governors Association Center for Best Practices, Council of Chief State School OfficersTitle: CCSS.Math.Content.1.NBT.C.4 Add Within 100, Including Adding A Two-digit... Number and Operations in Base Ten - 1st Grade Mathematics Common Core State Standards

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

Copyright Date: 2010

(Page last edited 09/28/2016)

- I4C: Online Practice - Add a two-digit and a two-digit multiple of ten number so that the total is within 100. - These online practice quizzes (interactives) support the following Common Core State Standard: CCSS.Math.Content.1.NBT.C.4. There are 100 quiz sets available on this topic. Answers are corrected after each question and a quiz results page is also shown which can be printed or emailed to a teacher, parent or mentor.
- I4C: Online Practice - Add a two-digit and one-digit number so that the total is within 100 - These online practice quizzes (interactives) support the following Common Core State Standard: CCSS.Math.Content.1.NBT.C.4. There are 100 quiz sets available on this topic. Answers are corrected after each question and a quiz results page is also shown which can be printed or emailed to a teacher, parent or mentor.
- I4C: Online Practice - Add two one-digit numbers - These online practice quizzes (interactives) support the following Common Core State Standard: CCSS.Math.Content.1.NBT.C.4. There are 100 quiz sets available on this topic. Answers are corrected after each question and a quiz results page is also shown which can be printed or emailed to a teacher, parent or mentor.
- I4C: Printable Worksheets - Add a two-digit and a two-digit multiple of ten number so that the total is within 100. - These worksheets support the following Common Core State Standard: CCSS.Math.Content.1.NBT.C.4. There are 100 worksheets available on this topic. A master answer key is available.
- I4C: Printable Worksheets - Add a two-digit and one-digit number so that the total is within 100 - These worksheets support the following Common Core State Standard: CCSS.Math.Content.1.NBT.C.4. There are 100 worksheets available on this topic. A master answer key is available.
- I4C: Printable Worksheets - Add two one-digit numbers - These worksheets support the following Common Core State Standard: CCSS.Math.Content.1.NBT.C.4. There are 100 worksheets available on this topic. A master answer key is available.
- Adding 2 digit and 1 digit Numbers. - Video; explains how to add one digit number to a two digit numbers.
- Adding a one digit to a two digit number. - Online quiz; vertical addition problems using a one digit and a two digit number.
- Adding a one digit to a two digit number. - Online quiz; addition of one digit and a two digit number.
- Adding with a Number Line - Online quiz; using the number line, add a one digit number and a two digit number.
- Adding Worksheet - Worksheet; 90 problems of addition- adding one digit and a two digit number.
- Addition Matching Game - Add one-digit and two-digit numbers finding the matches in this concentration type game.
- Ghost Blasters III - Online game; Two digit plus one digit number
- One & Two Digit No Regrouping Addition - Worksheet generator; select your parameters to create this worksheet on this topic.
- Printable Worksheet - Printable math worksheets are divided into horizontal addition and vertical addition. Scroll to the section on adding a one digit number to a two digit number.
- Rabbit Holes - Online quiz; count the rabbit holes; and answer the questions about the problem.