Applying Properties of Addition & Subtraction to 20 Guided Master Math Unit 8

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First Grade Roars
Grade Levels
K - 1st
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  1. This bundle contains my second five units of Master Math Curriculum for First Grade. The units included are Unit 6 Comparing Numbers, Unit 7 Addition and Subtraction to 20, Unit 8 Applying Properties, Unit 9 Telling Time, & Unit 10 Mental Math Strategies Everything you would need to teach Math i
    Price $70.00Original Price $84.00Save $14.00
  2. This bundle consists of 15 units that I use for my first grade guided math curriculum. It is built around the belief that students need to be exposed to math in a variety of ways. Master Math can be taught in many ways but I will provide the tools to make it a rotation based learning process. Each
    Price $200.00Original Price $253.00Save $53.00


This unit is the 8th unit of a first grade MASTER math curriculum built around the belief that students need to be exposed to math in a variety of ways. In this unit, students work on determining if addition and subtraction number sentences are true or false. They will work on balancing and equation and determine if an equation is balanced. Finally, they will decide what sign is missing in an addition and subtraction number sentence. Master Math can be taught in many ways but I will provide the tools to make it a rotation based learning process. Each lesson begins with a whole group mini lesson provided in a SMART notebook version or a pdf file. Then students begin to rotate (much like centers). MASTER stands for Manipulatives, Apply Skills, Small Group, Technology, Enrichment, and Review. Students will play games and participate in either Boom Cards or Google Slides to work on the technology piece. There are math activities provided for each component listed, lesson plans, assessments, SMART notebook files, and a fun culminating craft. Included you will receive:


  • True/False Addition Sentences Sort
  • True/False Subtraction Sentences Sort
  • True/False Subtraction Sentences Mixed
  • True/False Balanced Equation Sort
  • Missing Addend Task Cards
  • Missing Subtrahend Task Cards
  • What's Missing Task Cards Mixed
  • Add or Subtract
  • Balance the Equation Addition
  • Balance the Equation Subtraction

Apply Skills

  • True/False Addition Sentences Cover All
  • True/False Subtraction Sentences Cover All
  • True/False Subtraction Mixed Cover All
  • True/False Balanced Equation Cover All
  • Missing Addend Bingo
  • Missing Subtrahend Bingo
  • What's Missing Mixed Bingo
  • Add or Subtract Cover All

Small Group

  • True or False Addition equations
  • Missing addend
  • True or False subtraction equations
  • Missing subtrahends
  • Mixed true false equations
  • Mixed Addends and subtrahends
  • True or False Balance the equation
  • Balance the equations
  • What sign is missing
  • Review
  • Assessment

Technology 8 activities in Boom Learning and Google Slides

  • True/False Addition Sentences
  • True/False Subtraction Sentences
  • True/False Balanced Equation
  • Missing Addend
  • Missing Subtrahend
  • Add or Subtract
  • Balance the Equation Addition
  • Balance the Equation Subtraction


  • True/False addition equations 20+
  • Missing Addend 20+
  • True/False subtraction equations 20+
  • Missed Subtrahends 20+
  • Mixed true/false
  • Mixed missing addends & subtrahends 20+
  • True/false balance the equation 20+
  • Balance the equations 20+
  • What sign is missing? 20+


  • Least to greatest, greatest to least
  • <,>, & =
  • Writing numbers using words
  • Before and after
  • Counting base 10 and writing tens, ones and number sentence
  • Dividing shapes in halves and fourths and coloring parts
  • What is the value of a number?
  • How many tens and ones
  • Showing money
  • Solve & compare + & - sentences with<,>, & =

Detective Craft

Cumulative project to review missing addends

Recording Sheets

Class progress sheet

Individual progress sheet

Lesson Plans

11 lessons completed for you

5 templates to create your own

SMART Notebook warm up lessons whole group

10 different lessons

10 pdf’s in case you don’t have SMART Notebook

Description, I Can Statements, Standards, Binder Cover and Layout

Rotation Templates in SMART Notebook or PDF version


Some of this resource is in Google Slides format. You will NEED TO HAVE ACCESS to GOOGLE SLIDES to use this resource. It is also helpful to have GOOGLE CLASSROOM but not necessary. It will help you easily send the activities to your students.

Please note: I am not affiliated or associated with Google, nor do they endorse this resource. 

Important: To redeem your Boom Cards, you will create an account for Boom Learning. The account you get with your purchase allows you to play the Boom Cards on interactive whiteboards and with individual students using Fast Play. Fast Play does not save student progress reports.

To use Boom Cards, you must be connected to the Internet. Boom Cards play on modern browsers (Chrome, Safari, Firefox, and Edge). Apps are available for Android, iPads, iPhones, and Kindle Fires. For security and privacy, adults must have a Boom Learning account to use and assign Boom Cards. You will be able to assign the Boom Cards you are buying with "Fast Pins," (play provides instant feedback for self-grading Boom Cards). Fast Play is always a free way for students to engage with Boom Cards decks. For additional assignment options you'll need a premium account. If you are new to Boom Learning, you will be offered a free trial of our premium account. Read here for details:

***To try them out below with this preview link!****

What's My Sign

Balance the Equation Addition
Balance the Equation Subtraction

Missing Addend

Missing Subtrahend

True or False Balance the Equation

True or False Addition

True or False Subtraction

Similar Units

Number Sense Master Math Unit 1

Addition to 10 Master Math Unit 2

Subtraction to 10 Master Math Unit 3

Geometry Master Math Unit 4

Place Value Master Math Unit 5

First Grade Math Curriculum Master Math Bundle Units 1-5

Comparing Numbers Master Math Unit 6

Addition and Subtraction to 20 Master Math Unit 7

Applying Properties of Addition and Subtraction to 20 Master Math Unit 8

Telling Time Master Math Unit 9

Mental Math Master Math Unit 10

First Grade Master Math Curriculum Master Math Bundle 6-10

Measurement Master Math Unit 11

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Total Pages
Answer Key
Teaching Duration
2 Weeks
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to see state-specific standards (only available in the US).
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).
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.
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 = ▯.


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