Math 2.4
Number and operations. The student applies mathematical process standards to develop and use strategies and methods for whole number computations in order to solve addition and subtraction problems with efficiency and accuracy. The student is expected to:
- (1) recall basic facts to add and subtract within 20 with automaticity;
- (A) add up to four two-digit numbers and subtract two-digit numbers using mental strategies and algorithms based on knowledge of place value and properties of operations;
- (B) solve one-step and multi-step word problems involving addition and subtraction within 1,000 using a variety of strategies based on place value, including algorithms; and
- (C) generate and solve problem situations for a given mathematical number sentence involving addition and subtraction of whole numbers within 1,000.
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Math Keywords for Problem Solving
Help your students decipher math word problems with a set of printable math keyword anchor charts.
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Two-Digit Addition Using the Split Strategy – Poster and Worksheets
Teach your students how to use partitioning for two-digit addition with this ice cream-themed poster and worksheets.
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3 Digit Subtraction With Regrouping Game Cards
Practice 3-Digit subtraction with regrouping strategies with a printable set of subtraction strategy task cards.
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Fact Family Houses Worksheet Pack
Use these fact family houses worksheet set to practice addition and subtraction fact families with your students.
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2-Digit Number of the Day - Spiral Review
Review a variety of second-grade math concepts with a Number of the Day slide deck and recording sheet.
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Break Apart Strategy Worksheet
Practice using the break apart strategy when adding two-digit numbers with this worksheet.
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Split Strategy for Subtraction – Interactive Teaching Slides
Demonstrate using the split strategy for subtraction with an instructional slide presentation.
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Teaching the Subtraction Algorithm - Instructional Slides
Use this animated Instructional Slide Deck with your students when teaching how to use the subtraction algorithm with regrouping.
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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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2nd Grade Subtraction Strategies — Task Cards
Practice using various strategies to solve 2-digit subtraction problems (with and without regrouping) with a set of task cards.
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Jump Strategy - Number Line Addition Worksheet
Practice adding two-digit numbers with regrouping using a number line and the jump strategy with a printable number line worksheet.
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Addition Match-Up Puzzles
A set of 15 match-up cards to scaffold work with addition word problems.
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Addition Strategy - Decompose, Then Make 10 Worksheet
Build addition strategies using digits 1-10 with this two-page decomposing numbers worksheet.
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Number Talks - Fluency to 20 Task Cards
Build number sense skills with this set of 24 task cards.
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Fact Family Find and Flip - Addition and Subtraction Up to 20
Addition and subtraction game cards demonstrating the relationship between fact families.
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Addition and Subtraction Word Problem Task Cards (Numbers 1-50)
Use a range of addition and subtraction strategies to solve twenty word problems that contain numbers 1–50.
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Doubles Plus One - Worksheet
Practice the doubles plus one addition strategy with this one-page worksheet.
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Using Doubles to Subtract Board Game
Practice using doubles to subtract with this fun, apple-themed board game.
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Near Doubles Game: Wizard's Walk
Break out our near doubles game “Wizard’s Walk” for an engaging way to practice the near doubles strategy.
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Adding Doubles Board Game
Play our adding doubles board game to give your students a chance to practice their addition fact fluency.
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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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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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Strip Diagrams (Bar Model) Poster Pack
Help your students solve problems using the four operations with a pack of printable strip diagrams anchor charts.
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Combinations of 10 and 20 Posters
Easily recognize combinations of 10 and combinations of 20 with this visual poster set.
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Break Apart Strategy Addition Worksheet Pack
Practice using the break apart strategy with this worksheet set.
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2-Digit Subtraction Model Match-Up
Use a rigorous subtraction matching game to match subtraction word problems with number sentences, bar models, and solutions.
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Subtraction Strategies – Worksheet
Assess your students’ knowledge of subtraction strategies with a subtraction assessment.
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Subtraction Made Easy: Counting Back on a Number Line — Printable Poster
Provide your students with a daily reminder of the subtraction on a number line strategy with a printable anchor chart.
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Subtraction on a Number Line – Worksheets
Practice subtracting two-digit numbers with regrouping using a number line and the jump strategy with a pack of differentiated worksheets.
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"March Mathness" Basketball Math Craft - Addition
Practice 2-3 digit addition (with and without regrouping) with a fun "March Mathness" craft activity.
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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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Decorate a Pumpkin - Halloween Addition Game
Practice finding sums up to 12 with this fun Halloween Math Game!