In this Diving for Sums Add Subtract Within 1000 Activity, students add and subtract within 1000 using strategies of their choice.

Using Three Digit Addition Worksheet, students solve triple digit addition problems with and without regrouping by following the addition steps.

Using Two Digit Addition Worksheet, students solve two digit addition problems with and without regrouping by following the addition steps.

Using Why Does it Work Addition Subtraction Strategies Activity, students explain why addition and subtraction strategies work, using place value and the properties of operations.

While using our Adding 2 Digit Numbers Worksheet, students add two-digit numbers by using any strategy of their choice.

While using our Ways to Find the Number Worksheet, students solve the addition equations using strategies you have learned to solve the problems.

Using Commutative Property of Addition Activity, studentsmatch the popcorn cards to the matching popcorn container to show examples of the property.

In this Monkey Business Adding with an Unknown Number Activity, students find the unknown whole number in addition equations up to 20.

Using Compose and Decompose Numbers 11-19 Activity, students use ten frames to compose and decompose numbers to build numbers sense.

While using our Word Problems Addition Worksheet, students solve addition word problems by drawing pictures and writing equations.

This Using a Tens Frame to Show Addition Worksheet helps students use two different colors to create a tens frame and write an equation to make 10.

While using our Finding Other Names Worksheet, students write the number pairs that match the sums that the cats are sharing to improve fact fluency.

While using our Adding Using Pictures Worksheet, students add together groups of pictures to build fact fluency.

While using our Breaking Numbers Apart Worksheet, students break apart the numbers into pairs by showing 2 ways to decompose each number.

Using If I Know This Then I Know Addition Worksheet, students solve the addition equations below by applying the commutative property.

While using our Make the Statement True Addition Subtraction Worksheet, students write the missing numbers into the equations to make the equations true.

In this 2.NBT.5 Second Grade Common Core lesson, students fluently add and subtract within 100 using multiple strategies.

This 2.NBT.6 Second Grade Common Core Lesson includes 2.NBT.6 Worksheets, 2.NBT.6 Activities, 2.NBT.6 Assessment, and 2.NBT.6 Poster

In this 2.NBT.8 Second Grade Common Core Lesson, students mentally add and subtract 10 or 100 from a given number 100–900.

Using Quad Digits Addition Worksheet, students solve four digit addition problems with regrouping by following the addition steps.