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Features

The goal and its "I can" line, what to get ready and the words to use
A 45 minute lesson in five steps (warm up, teach with words to say, try it together, practice, exit ticket)
Questions to ask, and the mistakes students make and what to do about them
Ideas for students who need help or are ready for more
Each plan ends with the Animal Math worksheets, worksheet makers, tools and quizzes for that lesson
Lessons: adding tens and 10 more and 10 less, adding on an open number line, adding by place value, making a new ten with blocks and quick drawings, making a ten first, adding in columns with regrouping, adding three and four numbers, and explaining and finding the mistake
Lessons 4.6 (make 100) and 4.10 (estimate to check a sum) for the states that teach them in 2nd grade

2nd Grade Math CurriculumUnit 4

These are the lesson plans for Unit 4 of 13 in the 2nd Grade Math Curriculum: 128 lessons in teaching order, week by week, each with a lesson plan and an exit ticket.

← Previous unitUnit 3: Counting and Comparing to 1,000 Next unit →Unit 5: Subtraction Within 100

Also for this unit: this unit’s exit tickets and this unit’s test. See the whole year

Resources for Each Lesson

Everything each lesson plan points to, with links. Sheet numbers count worksheets: a color pack prints each sheet again in black and white.

4.1 Add tens, 10 more and 10 less

PrintableAdding and Subtracting Tens: sheet 3, for review
PrintableTen More and Ten Less: sheet 3, for review
MakerBase-ten Values: Mode 10 More and 10 Less, Number Range 10 to 100
ToolHundreds Chart: Click a Number To: See 10 More and 10 Less
QuizAdd and Subtract Within 100 Quiz: the 10 More, 10 Less level
Exit ticket2nd Grade Addition Within 100 Exit Tickets: Exit Ticket 4.1

4.2 Add on an open number line

Printable2-Digit Addition Strategies: sheet 3
MakerNumber Line: Mode Addition on Number Line, Number Range 1 to 100
ToolNumber Line: Start 60, End 100, then Jump
QuizAddition Within 100 Quiz: the Strategies level
Exit ticket2nd Grade Addition Within 100 Exit Tickets: Exit Ticket 4.2

4.3 Add by place value

Printable2-Digit Addition Strategies: sheet 1
MakerColumn Math Equations: Operations +, Range Within 100, Set Digit Count, Digits 2 digits, Regrouping / Borrowing off
ToolBase Ten Blocks
QuizAddition Within 100 Quiz: the No Regrouping level
Exit ticket2nd Grade Addition Within 100 Exit Tickets: Exit Ticket 4.3

4.4 Make a new ten with blocks and drawings

Printable2-Digit Addition Strategies: sheet 2
MakerBase-ten Values: Mode Many Ways, Number Range 10 to 100
ToolBase Ten Blocks: select ten ones and press Put Together
QuizAddition Within 100 Quiz: the Regrouping level
Exit ticket2nd Grade Addition Within 100 Exit Tickets: Exit Ticket 4.4

4.5 Make a ten first

Printable2-Digit Addition Strategies: sheet 4
ToolTen Frames: add frames with + 10-Frame
ToolBase Ten Blocks
QuizAddition Within 100 Quiz: the Strategies level
Exit ticket2nd Grade Addition Within 100 Exit Tickets: Exit Ticket 4.5

4.6 Make 100 ★

PrintableMake 100: sheets 1-2, and sheet 4 for early finishers
ToolHundreds Chart: Click a Number To: Color It
ToolBase Ten Blocks: add a hundred, select it and press Break Apart
Exit ticket2nd Grade Addition Within 100 Exit Tickets: Exit Ticket 4.6

4.7 Add in columns with regrouping

MakerColumn Math Equations: Operations +, Range Within 100, Set Digit Count, Digits 2 digits, Regrouping / Borrowing on, Mix All
PrintableColumn Math to 100: the addition problems on sheet 4
ToolBase Ten Blocks: select ten ones and press Put Together
QuizAddition Within 100 Quiz: the Regrouping level
Exit ticket2nd Grade Addition Within 100 Exit Tickets: Exit Ticket 4.7

4.8 Add three and four numbers

MakerHorizontal Math Equations: Operations +, Range Within 100, Three Numbers, Numbers Any Numbers
PrintableAdding Three Numbers: sheet 4, for the warm up
ToolBase Ten Blocks
QuizAddition Within 100 Quiz: the 3 or 4 Numbers level
Exit ticket2nd Grade Addition Within 100 Exit Tickets: Exit Ticket 4.8

4.9 Explain, check and find the mistake

Printable2-Digit Addition Strategies: sheet 5
ToolBase Ten Blocks
ToolNumber Line
QuizAddition Within 100 Quiz: the Regrouping level
Exit ticket2nd Grade Addition Within 100 Exit Tickets: Exit Ticket 4.9

4.10 Estimate to check a sum ★

PrintableEstimate to Add & Subtract: sheets 1-2, and sheet 5 for early finishers
MakerRounding Numbers: Round to Nearest 10, Show Number Line Hint
ToolNumber Line: Start 0, End 100, Interval 10
Exit ticket2nd Grade Addition Within 100 Exit Tickets: Exit Ticket 4.10

★ Taught in 2nd grade in some states.

Skills Covered

Add tens; find 10 more and 10 less
Add on an open number line
Add the tens and the ones
Make a new ten with blocks and quick drawings
Make a ten first

Make 100
Add in columns with regrouping
Add three and four two-digit numbers
Explain, check and find the mistake
Estimate to check a sum

How to Use This Pack

Ten lesson plans, one for each lesson of a 2nd grade unit on adding within 100, in teaching order, after an overview page that lays the unit out day by day: a pre-check, the ten lessons, a review and the unit test. Each plan fits on one page. It gives the goal, what to get ready, the words to use, the lesson in five steps with the words to say, questions to ask, common mistakes and what to do about them, and the Animal Math worksheets, makers, tools and quizzes for the lesson.

In the Classroom

Print the unit, or just the day's page, and teach from it. Each lesson takes about 45 minutes: a 5 minute warm up, 10 minutes of teaching, 10 minutes together, 15 minutes of practice and an exit ticket at the end. The exit tickets and the unit test are separate packs, made for these lessons. Lessons 4.6 (make 100) and 4.10 (estimate to check a sum) are for the states that teach them in 2nd grade.

At Home

Teaching at home? Use the warm up and the "Try it together" step as a short lesson, and the "Words to use" as the way to talk about it. Bundles of ten straws or craft sticks work as well as base-ten blocks. The mistakes to watch for are the ones most children make.

Tips for Success

Read the "Watch for" box before the lesson: it is what to listen for while students work
Keep base-ten blocks and a hundreds chart on the tables for the whole unit
Ask "Do the ones make a new ten?" before every sum
Sort the exit tickets into got it, almost and not yet to plan the next day

Common Core Standards Alignment

This pack supports the following Common Core State Standards for Mathematics:

1.OA.C.5 Connect counting with adding and subtracting, such as adding 4 by counting on four more.
1.OA.C.6 Add and subtract to 20, working fluently within 10, with strategies like counting on, making ten, fact families and doubles plus one.
2.NBT.B.5 Add and subtract to 100 fluently with place-value strategies, properties of addition, or the link between adding and subtracting.
2.NBT.B.6 Find the sum of two, three or four two-digit numbers using place value and properties of addition.
2.NBT.B.7 Add and subtract to 1,000 with models and place-value strategies, working hundreds, tens and ones separately and regrouping tens or hundreds as needed.
2.NBT.B.8 Mentally find the number 10 or 100 greater or smaller than any number from 100 to 900.
2.NBT.B.9 Tell why an adding or subtracting method gives the right answer, reasoning from place value and number properties.
2.MD.B.6 Show whole numbers as distances from 0 on an evenly marked number line, and show sums and differences up to 100 as jumps on it.
3.NBT.A.1 Use place value to decide which ten or hundred a whole number is closest to, and round to it.

2nd Grade Addition Within 100 Lesson Plans

2nd Grade2nd Grade Math Curriculum

Lesson plans for every lesson of a unit on adding within 100, from adding tens to adding in columns. Each one-page plan gives a lesson in five steps, common mistakes and the worksheets to use, after a unit overview.

Download PDF

What’s Included

10 one-page lesson plans, one for each lesson of the unit
A unit overview: the unit day by day, what to get ready, how each lesson goes
Words to say, questions to ask and common mistakes for every lesson
The worksheets, makers, tools and quizzes for each lesson (11 pages in all)

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