CCSS.MATH.CONTENT.1.NBT.C.4
Add within 100, including adding a two-digit number and a one-digit number, and adding a two-digit number and a multiple of 10, 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. Understand that in adding two-digit numbers, one adds tens and tens, ones and ones; and sometimes it is necessary to compose a ten.
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Word Problems Addition and Subtraction Escape Room
Search for a lost treasure in our word problems addition and subtraction escape room that will give your students varied practice adding and subtracting one and two-digit numbers.
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Ten Frame Printable Templates
Use these printable ten frames in various math lessons to reinforce number sense and other essential skills.
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Addition Strategies Cheat Sheet
Help students understand the different addition strategies with this helpful cheat sheet.
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Making Monsters Subtraction - Halloween Math Worksheet
Have some spooky subtraction fun with three differentiated Halloween subtraction worksheets.
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Adding with Strip Diagram Cut and Paste Worksheet
Practice adding two digit numbers using the strip diagram with this cut and paste worksheet.
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Adding and Subtracting Word Problems Interactive Task Cards
Engage your students with this interactive adding and subtracting word problems activity that features a variety of problem types.
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Adding and Subtracting Money Word Problems Game
Download this adding and subtracting money word problems game for a fun way to practice double digit operations using real-world scenarios.
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Printable Ten Frames (Single and Double)
Introduce these printable ten frames to your students to promote number sense with hands-on learning.
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Addition and Subtraction Word Problems - Match Game
Practice reading, modeling, and solving addition and subtraction word problems with a matching activity.
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Fall Math Worksheets - Addition to 99
Celebrate the coming of Fall and practice adding 2-digit numbers up to 99 with a set of four Fall color-by-number worksheets.
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Money Word Problems Addition and Subtraction Worksheet Set
Use our money word problems addition and subtraction worksheet set to give your students differentiated practice modeling a variety of one and two-digit word problems.
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Number Grid Game — Interactive Activity
Share this number grid game with your students to give them practice adding and subtracting ten and one from a given number.
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Subtraction Fact Fluency Assessments
Assess and track subtraction fact fluency with a printable Math Fact Fluency program for subtraction facts.
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Addition to 20 Activity - Winter Math Puzzle for 1st Grade
Practice addition facts up to 20 with a printable winter math puzzle for kindergarten and first-grade students.
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Feed the Pumpkins - 1st Grade Subtraction Worksheet
Feed the pumpkins and practice subtraction to twenty with a Halloween subtraction worksheet.
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Number Talks - Double Digit Addition Task Cards
Build number sense skills with this set of 24 task cards.
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Subtraction Stew - Halloween Math Worksheet
Have some spooky subtraction fun with a Halloween picture-model subtraction worksheet.
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Number Talks - Making Ten Task Cards
Build number sense skills with this set of 20 task cards.
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Math Graphic Organizers - Printable Work Mats
Practice working on specific math concepts with our set of 5 printable math graphic organizers.
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Numbers to 30 - Tens Frames - Printable
Use a printable ten frame when working on counting, addition and subtraction, odd and even numbers, or place value.
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Subtraction Strategies - Ten Frame Printable Bingo Game
Practice using ten frames to subtract single-digit numbers in a whole class bingo game.
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Subtraction with Ten Frames - Worksheet
Model and subtract numbers to twenty using ten frames with a handy ten-frame subtraction worksheet.
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Subtraction within 20 - Color by Number Worksheet
Reveal the mystery picture by solving the subtraction problems with a color-by-number worksheet.
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Sunflower Subtraction Strategies Interactive
Practice using the ten-frame subtraction strategy with a fun self-checking interactive activity.
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Subtraction Using Picture Models Worksheet
Practice subtracting numbers to 12 using picture models with a printable subtraction worksheet.
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Pirate's Plunder - Number Line Subtraction Game
Practice using the jump strategy for subtraction from 20 with an exciting pirate-themed math game.
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Subtraction Strategy Work Mats
Practice using a variety of subtraction strategies to solve problems with a set of printable subtraction work mats.
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Easter Literacy and Math Centers - Digital Learning Activity
Lost the lesson-planning stress this Easter season with an exciting no-prep digital Easter Literacy and Math center.
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Mental Math Addition Posters
Use this set of addition posters in your classroom when teaching different mental math strategies.
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Mental Math Subtraction Printable Posters
Use this set of subtraction posters in your classroom when teaching different mental math strategies.
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2-Digit Addition Color by Number- Halloween Mystery Picture
Celebrate the coming of Halloween and practice adding 2-digit numbers up to 99 with a set of addition color by number worksheets.
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Addition and Subtraction Within 20 – Worksheet
Use this worksheet with your students when exploring addition and subtraction within 20.