1.NBT.C.6

Subtract multiples of 10 in the range 10-90 from multiples of 10 in the range 10-90 (positive or zero differences), 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.

 
12 Lesson(s)
   

Adding and Subtracting Multiples of Ten

1st Grade Math » Unit: The Ten Concept: Counting On and Off the Decade and Knowing 10 More/ 10 Less
1st Grade Math » Unit: The Ten Concept: Counting On and Off the Decade and Knowing 10 More/ 10 Less
Thomas Young
Waitsfield, VT
Environment: Suburban
 
Big Idea:

Students will apply the idea of adding or subtracting ten to a number by adding or subtracting multiple groups of ten from a number.

 
Favorites (20)
 
Resources (22)
 
Reflections (1)
lesson image
   

Pick Your Ten

1st Grade Math » Unit: The Ten Concept: Counting On and Off the Decade and Knowing 10 More/ 10 Less
1st Grade Math » Unit: The Ten Concept: Counting On and Off the Decade and Knowing 10 More/ 10 Less
Thomas Young
Waitsfield, VT
Environment: Suburban
 
Big Idea:

Score this party a 10! Students will join in a 10 celebration as they choose from their favorite unit activities .

 
Favorites (2)
 
Resources (14)
 
Reflections (1)
lesson image
   

Speed Date!

1st Grade Math » Unit: Adding and Subtracting: Base Ten
1st Grade Math » Unit: Adding and Subtracting: Base Ten
Amanda Cole
New Orleans, LA
Environment: Urban
 
Big Idea:

Students get moving in this lesson where they practice explaining someone else's thinking orally to help them get ready to write their explanations later!

 
Favorites (5)
 
Resources (20)
 
Reflections (1)
speed dating
   

How Many On My Plate? (Addition)

1st Grade Math » Unit: The Ten Concept: Counting On and Off the Decade and Knowing 10 More/ 10 Less
1st Grade Math » Unit: The Ten Concept: Counting On and Off the Decade and Knowing 10 More/ 10 Less
Thomas Young
Waitsfield, VT
Environment: Suburban
 
Big Idea:

Students will use their ability to count by tens on and off the decade by taking part in an activity that requires them to start with a number of cubes and then repeatedly add ten.

 
Favorites (5)
 
Resources (24)
 
Reflections (1)
lesson image
   

Subtract Tens

1st Grade Math » Unit: Two Digit Addition and Subtraction
1st Grade Math » Unit: Two Digit Addition and Subtraction
Lisa Murdock
Lakeland, FL
Environment: Urban
 
Big Idea:

This lesson focuses on having students demonstrate how to draw a quick picture to subtract tens.

 
Favorites (12)
 
Resources (12)
 
Reflections (1)
subtract tens student work 2
   

How Many On My Plate? (Subtraction)

1st Grade Math » Unit: The Ten Concept: Counting On and Off the Decade and Knowing 10 More/ 10 Less
1st Grade Math » Unit: The Ten Concept: Counting On and Off the Decade and Knowing 10 More/ 10 Less
Thomas Young
Waitsfield, VT
Environment: Suburban
 
Big Idea:

Students will use their ability to count by tens on and off the decade by taking part in an activity that requires them to start with a number of cubes and then repeatedly subtract ten.

 
Favorites (4)
 
Resources (19)
 
Reflections (1)
lesson image
   

End Of Unit Assessment

1st Grade Math » Unit: The Ten Concept: Counting On and Off the Decade and Knowing 10 More/ 10 Less
1st Grade Math » Unit: The Ten Concept: Counting On and Off the Decade and Knowing 10 More/ 10 Less
Thomas Young
Waitsfield, VT
Environment: Suburban
 
Big Idea:

Students will use the knowledge they gained during this unit to complete a variety of assessment tasks. Once they are finished, they will play a new activity.

 
Favorites (4)
 
Resources (20)
 
Reflections (1)
lesson image
   

The Wheels on the Bus

1st Grade Math » Unit: Base 10 Bonanza
1st Grade Math » Unit: Base 10 Bonanza
Amanda Cole
New Orleans, LA
Environment: Urban
 
Big Idea:

Go round and round...Round and round...round and round! Sing The Wheels on the Bus while students apply base 10 understanding to change problems.

 
Favorites (5)
 
Resources (16)
 
Reflections (1)
pete the cat
   

Will you be my Valentine?

1st Grade Math » Unit: Adding and Subtracting: Base Ten
1st Grade Math » Unit: Adding and Subtracting: Base Ten
Amanda Cole
New Orleans, LA
Environment: Urban
 
Big Idea:

Students solve story problems and celebrate Valentine's Day in this read aloud inspired lesson. Connect literacy into your math block, and build investment with a fun Valentine craft at the end!

 
Favorites (3)
 
Resources (12)
valentine
   

Mid Unit Check In

1st Grade Math » Unit: The Ten Concept: Counting On and Off the Decade and Knowing 10 More/ 10 Less
1st Grade Math » Unit: The Ten Concept: Counting On and Off the Decade and Knowing 10 More/ 10 Less
Thomas Young
Waitsfield, VT
Environment: Suburban
 
Big Idea:

This task will offer a challenging activity and will also act as a piece of formative assessment as you look deeper into how well they can add or subtract ten from a number and plan your instruction from here.

 
Favorites (2)
 
Resources (23)
 
Reflections (1)
lesson image
   

Knockin It Out of the Park by Subtracting Ten

1st Grade Math » Unit: Place Value
1st Grade Math » Unit: Place Value
Jennifer Moon
Oklahoma City, OK
Environment: Urban
 
Big Idea:

My students need to apply their understanding of place value to properties of addition and subtraction. We continue to build that understanding today by connecting to subtraction facts they already know well.

 
Favorites (1)
 
Resources (16)
 
Reflections (1)
ballpark
   

Continuing to build mental math skills

1st Grade Math » Unit: Place Value
1st Grade Math » Unit: Place Value
Jennifer Moon
Oklahoma City, OK
Environment: Urban
 
Big Idea:

It is a difficult task for first graders to begin using mental math. This lesson is part of a series of lessons to give them practice with subtracting ten from any given two-digit number.

 
Favorites (3)
 
Resources (16)
 
Reflections (1)
einstein
Common Core Math
 
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