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# Common Core Math Practice to Mastery! 2nd Grade 2.NBT.6, 8 and 9 Unit

Rated 5 out of 5, based on 22 reviews
22 Ratings
Primarily Teaching
736 Followers
1st - 3rd, Homeschool
Subjects
Standards
Resource Type
Formats Included
• PDF
Pages
24 pages
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Primarily Teaching
736 Followers

### Description

The Math Practice to Mastery! program utilizes the "Most Difficult First" method, where students who already have the skill mastered can become tutor leaders in your class and not have to do the repetitive practice that most learners need. This unique method gives students who need the repetition the opportunity for enough practice to master the skills. It's a Win-Win!
Did you know that one standard can have several skills involved? Standards 2.NBT.6, 2.NBT.8 AND 2.NBT.9
(I can: 1) add up to four two-digit numbers using strategies based on place value and properties of operations; 2) mentally add 10 or 100 to a given number 100–900, and mentally subtract 10 or 100 from a given number 100–900; and 3) explain why addition and subtraction strategies work, using place value and the properties of operations.)
have 9 skills that must be mastered!

Lesson 1: 2.NBT.6.C4 (Concept 4) Adding three 2-digit numbers
Lesson 2: 2.NBT.6.C2 (Concept 2) Adding four 2-digit numbers (multiples of 10)
Lesson 3: 2.NBT.6.C3 (Concept 3) Adding four 2-digit numbers (place value strategy)
Lesson 4: 2.NBT.6.C1 (Concept 1) Adding four 2-digit numbers
Lesson 5: 2.NBT.8.C1 (Concept 1) Mentally add 10 within 100-900
Lesson 6: 2.NBT.8.C2 (Concept 2) Mentally add 100 within 100-900
Lesson 7: 2.NBT.8.C3 (Concept 3) Mentally subtract 10 within 100-900
Lesson 8: 2.NBT.8.C4 (Concept 4) Mentally subtract 100 within 100-900
Lesson 9: 2.NBT.9.C1 (Concept 1) Adding two digit numbers using place values

This pack includes a unit test and a Teacher Quick-Check Answer Sheets Section for quick, easy grading.

My program includes significant practice and strategies to enable all students to master the skills! I'm beginning with 2nd grade and will continue development of the rest of the standards and other grade levels soon. Using this method, my second graders have gained up to 2 years in math skills in one semester!

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Total Pages
24 pages
Included
Teaching Duration
2 Weeks
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### Standards

to see state-specific standards (only available in the US).
Add up to four two-digit numbers using strategies based on place value and properties of operations.
Mentally add 10 or 100 to a given number 100–900, and mentally subtract 10 or 100 from a given number 100–900.
Explain why addition and subtraction strategies work, using place value and the properties of operations.