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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Decomposing Numbers - Subtraction Teaching Slides
Challenge students to decompose numbers to mentally solve two-digit subtraction problems with a teaching presentation.
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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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2-Digit Subtraction Using Bar Models- Differentiated Worksheets
Review and assess your students’ subtraction skills with differentiated 2-digit subtraction worksheets focusing on the bar model strategy.
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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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Split Strategy for Subtraction – Interactive Teaching Slides
Demonstrate using the split strategy for subtraction with an instructional slide presentation.
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Compensation Strategy for Subtraction – Teaching Slides
Teach your students to use the compensation strategy for subtraction with an interactive teaching slide deck.
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Number Bonds Worksheet - Cut and Paste
Practice subtraction up to twenty with a cut-and-paste number bond 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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Subtracting 2-Digit Numbers Task Cards
Practice 2-digit subtraction with this set of 18 task cards.
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Counting Backwards to Subtract - Number Fact Board Game
Practice subtracting by counting backwards with a pair of printable subtraction games.
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Subtraction Bingo (Single and Double-Digit Numbers)
Practice subtracting single and double digit numbers with a fun Subtraction Bingo Game.
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Compatible Numbers for Subtraction – Slide Deck
Teach your students to use compatible numbers as a subtraction strategy with an interactive slide deck.
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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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Hundreds Chart Color By Number - Subtraction
Practice subtracting single and double-digit numbers with a set of subtraction color by number task cards.
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Exploring Subtraction Strategies Instructional Slide Deck
Explore and teach multiple subtraction strategies with an instructional slide deck
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Subtraction Game - 2-Digit Subtraction Dominoes
Use this printable set of double-digit subtraction dominoes to practice a variety of subtraction strategies.
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Subtraction Methods - Printable Mini-Book
Teach and practice various subtraction strategies with a printable 3-digit subtraction mini book.
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Number Matching Puzzle - Double Digit Subtraction
A hands-on game to play when practicing double-digit subtraction.
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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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2-Digit Subtraction with Place Value Disks - Match Up
Practice using place value disks to solve 2-digit subtraction problems with a matching activity.
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Mental Math – Subtraction Flashcards
Build up your students' mental math skills with a set of 36 subtraction flashcards using one- and two-digit numbers.
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Addition and Subtraction Work Mat
Practice addition and subtraction concepts daily with a printable work mat for students.
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3-Digit Addition and Subtraction with Regrouping - Posters
Break down the steps to use regrouping to find a solution with an addition and a subtraction poster.
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Missing Part Path - Find the Missing Number Worksheet
Practice using various subtraction strategies with a fun dice-roll math maze.
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Trade It! Subtraction with Regrouping Game
Play a fun, hands-on board game in groups when learning to solve subtraction equations that require regrouping.
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Subtraction Strategies Puzzle Match
Practice identifying and using different subtraction strategies with a set of printable math puzzles.
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Jump Strategy - Number Line Addition Game
Practice using the jump strategy for multi-digit addition with a fun math game.
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Addition on a Number Line - Jump Strategy Slide Deck
Teach your students to add two-digit numbers using the jump strategy with an instructional teaching presentation.
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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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Double-Digit Subtraction Strategies Posters
Remind your students to use different subtraction strategies with a set of printable subtraction anchor charts.
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Addition and Subtraction Fact Families Teaching Presentation
Use this 19-slide editable slide deck when introducing addition and subtraction fact families to your students.
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Secret Code Number Line - Worksheet
Crack the number line code with five number line codebreaker worksheets to practice number identification, addition, and subtraction.