First Grade Addition and Subtraction BUNDLE

This addition and subtraction giant bundle includes 482 pages of worksheets and games, plus BONUS TpT Digital Activities. It features scaffolded instruction to help your children to understand and then master addition and subtraction standards. I've included all of my addition and subtraction within 10, plus all my addition and subtraction within 20 sets in this bundle.

*Feel free to use packets as needed if you are doing distance learning due to Covid.

**TpT Digital Activities can be assigned in Google Drive and graded through your TpT account.

***Note that advanced kindergarteners and developing upper-grade students will also benefit from this bundle!

Your students will learn:

CCSS.MATH.CONTENT.1.OA.C.5

Relate counting to addition and subtraction (e.g., by counting on 2 to add 2).

(See Addition Within 20: Counting On Strategy; Addition Within 20 Games; and the Subtraction Within 20 Games sets.)

CCSS.MATH.CONTENT.1.OA.C.6

Add and subtract within 20, demonstrating fluency for addition and subtraction within 10. Use strategies such as counting on; making ten (e.g., 8 + 6 = 8 + 2 + 4 = 10 + 4 = 14); decomposing a number leading to a ten (e.g., 13 - 4 = 13 - 3 - 1 = 10 - 1 = 9); using the relationship between addition and subtraction (e.g., knowing that 8 + 4 = 12, one knows 12 - 8 = 4); and creating equivalent but easier or known sums (e.g., adding 6 + 7 by creating the known equivalent 6 + 6 + 1 = 12 + 1 = 13).

(See ALL Addition and Subtraction Within 10 Sets; ALL Addition Within 20 sets; Subtraction Within 20 Games; and the Mixed Addition and Subtraction Within 20 sets.)

CCSS.MATH.CONTENT.1.OA.D.7
Understand the meaning of the equal sign, and determine if equations involving addition and subtraction are true or false. For example, which of the following equations are true and which are false? 6 = 6, 7 = 8 - 1, 5 + 2 = 2 + 5, 4 + 1 = 5 + 2.

(See the Mixed Addition and Subtraction Within 20 set.)

CCSS.MATH.CONTENT.1.OA.D.8
Determine the unknown whole number in an addition or subtraction equation relating three whole numbers. For example, determine the unknown number that makes the equation true in each of the equations 8 + ? = 11, 5 = _ - 3, 6 + 6 = _.

(See the Mixed Addition and Subtraction Within 20 set.)

CCSS.MATH.CONTENT.1.OA.B.3

Apply properties of operations as strategies to add and subtract. Examples: If 8 + 3 = 11 is known, then 3 + 8 = 11 is also known. (Commutative property of addition.) To add 2 + 6 + 4, the second two numbers can be added to make a ten, so 2 + 6 + 4 = 2 + 10 = 12. (Associative property of addition.)

(See the Commutative Property of Addition and Using Tens sets.)

CCSS.MATH.CONTENT.1.OA.B.4

Understand subtraction as an unknown-addend problem. For example, subtract 10 - 8 by finding the number that makes 10 when added to 8.

(See the Mixed Addition and Subtraction Within 20 set.)

CCSS.MATH.CONTENT.1.OA.A.2

Solve word problems that call for addition of three whole numbers whose sum is less than or equal to 20, e.g., by using objects, drawings, and equations with a symbol for the unknown number to represent the problem.

(See the Addition Within 20 Word Problems and the Mixed Addition and Subtraction Within 20 sets.)

CCSS.MATH.CONTENT.1.OA.A.1 Use addition within 20 to solve word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions, e.g., by using objects, drawings, and equations with a symbol for the unknown number to represent the problem.

(See the Addition Within 20 Word Problems set. Note that I plan to add subtraction within 20 word problems at a later time.

CCSS.MATH.CONTENT.2.OA.B.2
Fluently add and subtract within 20 using mental strategies.2 By end of Grade 2, know from memory all sums of two one-digit numbers.

(All sets support this standard.)