## CCSS.Math.Content.2.NBT.B.5 - Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction.

Authors: National Governors Association Center for Best Practices, Council of Chief State School OfficersTitle: CCSS.Math.Content.2.NBT.B.5 Fluently Add And Subtract Within 100 Using... Number and Operations in Base Ten - 2nd 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 10/08/2017)

- I4C: Online Practice - Add 2 two-digit numbers so that the total is within 100 - These online practice quizzes (interactives) support the following Common Core State Standard: CCSS.Math.Content.2.NBT.B.5. 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 - Subtract within 100 (2-digits only) - These online practice quizzes (interactives) support the following Common Core State Standard: CCSS.Math.Content.2.NBT.B.5. 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 - Subtract within 100 with regrouping - These online practice quizzes (interactives) support the following Common Core State Standard: CCSS.Math.Content.2.NBT.B.5. 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 - Subtract within 100 without regrouping - These online practice quizzes (interactives) support the following Common Core State Standard: CCSS.Math.Content.2.NBT.B.5. 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 2 two-digit numbers so that the total is within 100 - These worksheets support the following Common Core State Standard: CCSS.Math.Content.2.NBT.B.5. There are 100 worksheets available on this topic. A master answer key is available.
- I4C: Printable Worksheets - Subtract within 100 (2-digits only) - These worksheets support the following Common Core State Standard: CCSS.Math.Content.2.NBT.B.5. There are 100 worksheets available on this topic. A master answer key is available.
- I4C: Printable Worksheets - Subtract within 100 with regrouping - These worksheets support the following Common Core State Standard: CCSS.Math.Content.2.NBT.B.5. There are 100 worksheets available on this topic. A master answer key is available.
- I4C: Printable Worksheets - Subtract within 100 without regrouping - These worksheets support the following Common Core State Standard: CCSS.Math.Content.2.NBT.B.5. There are 100 worksheets available on this topic. A master answer key is available.
- Adding Two Digit Numbers - Online math quiz.
- Addition & Subtraction - Online math game, adding/subtracting 3 numbers. Click on the UFO, calculate, then find the answer on the left.
- Addition Machine - Good activity for IWB or whole class; choose level of question, then answer it.
- Arithmetic Four? - (A game like Connect Four) A pair of students must answer arithmetic questions (addition, subtraction, multiplication, division) to earn a piece to place on the board. Parameters: time limit, difficulty level, types of questions.
- Balance subtration equations - Which number makes the equation true.
- Defeat the Math Monster - Online game; choose game play options; addition or subtraction, easy, medium, hard.
- Ghost Blasters II - (two players) Students must "blast" a pair of ghosts whose sum equals some number specified before the game begins. Sums from 5 to 99 can be set.
- Subtration Machine - Good activity for IWB or whole class. Choose a skill level, type the answer, and then check for correctness.
- Ways to Make a Number; Addition - Select ALL the ways to make a given number.
- Ways to Make a Number; Addition and Subtraction. - Select way which is NOT the way to create the number.

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