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2.NBT.8 Mental Math Mentally Add and Subtract 10 or 100 2.NBT.B.8 2nd Grade Math

Rated 4.89 out of 5, based on 83 reviews
4.9 (83 ratings)
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Grade Levels
2nd
Resource Type
Standards
Formats Included
  • PDF
Pages
70 pages
$5.00
$5.00
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What educators are saying

This resource is a good start point. You can use it as a standalone or add it to your own materials.
I love using this resource! It makes everything much easier for my class and there is plenty of practice for everyone.
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  1. This is a second grade math bundle, that contains all 9 standards within the Numbers and Operations in Base Ten (NBT) 2nd grade Common Core domain. Within this domain, there are full lesson plan units that cover place value, 3-digit numbers, ways to represent numbers, comparing numbers, add and subt
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Description

This 2nd grade math standards-based mentally add and subtract 10 and 100 unit focuses on the Common Core math standards 2.NBT.8. This asks students to mentally add 10 or 100 or mentally subtract 10 or 100 from a given number. There are daily lesson plans, whole group activities, partner practice activities, MATH group centers, exit slips, and assessments.

What's included in the 3 daily lesson plans:

  • Whole group activity
  • Partner practice activity
  • MATH group: Math writing, Apply new skills, Teacher time, Hands-on math (Teacher time is differentiated learning opportunities for remediation, on-level, and enrichment.)
  • Exit slip

2.NBT.3 Focus:

--Day 1- Mentally Add or Subtract 100

--Day 2- Mentally Add or Subtract 10

--Day 3- Mentally Add/Subtract 10/100

CCSS.MATH.CONTENT.2.NBT.B.8

Mentally add 10 or 100 to a given number 100-900, and mentally subtract 10 or 100 from a given number 100-900.

The 2.NBT.8 activities that are included in my short answer, centers, printables, and interactive notebooks are similar, but have all been changed to fit these lesson plans. The short answers have different prompts and are now part of MATH groups, the printables & interactive notebooks have been updated and are used during the 'Apply new skills' part of MATH groups.

Want all NBT units in one big bundle?

There are 9 standards in the NBT domain. Click HERE to buy the bundle of units. Or click below for single standard units!

This unit is also part of a full-year Common Core Standards based bundle that you can find HERE.

Want more CCSS math units?

>>2.NBT.1

>>2.NBT.2

>>2.NBT.3

>>2.NBT.4

>>Extra Regrouping Unit

>>2.NBT.5

>>2.NBT.6

>>2.NBT.7

>>2.NBT.9

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This purchase is for one single classroom only.

If you're interested in sharing with other classrooms, make sure to buy the extra licenses for a discount through the TeachersPayTeachers tool. If you are interested in a site license, please contact me for a quote at jessica.L.tobin@gmail.com.

Total Pages
70 pages
Answer Key
N/A
Teaching Duration
1 Week
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Standards

to see state-specific standards (only available in the US).
Mentally add 10 or 100 to a given number 100–900, and mentally subtract 10 or 100 from a given number 100–900.

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