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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Roll It! Operations Game
Use this fun game to practice all four operations and/or order of operations.
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Addition and Subtraction Problem Solving Task Cards
Practice solving 1- and 2-step word problems by adding and subtracting 2-digit numbers with this set of 16 task cards.
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Friends of 10 Addition Poster Bundle
Print the ultimate Friends of 10 poster bundle with 10 printable classroom posters designed to show students how different combinations of numbers connect to make the same number.
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Double Dinos - Using Doubles Facts to Add Near Doubles Worksheet
Practice the “near doubles” addition strategy to solve addition problems to 20.
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Adding 2-Digit Numbers Worksheet
Practice 2-digit addition with regrouping with this drill and practice worksheet.
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Doubles Plus One - Worksheet
Practice the doubles plus one addition strategy with this one-page worksheet.
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Color by Number – Repeated Addition and Multiplication
Guide your students to connect repeated addition with multiplication by completing this color-by-code multiplication 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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Number Talks - Double Digit Subtraction Task Cards
Encourage the use of mental math strategies with 2-digit subtraction number talks task cards.
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Multi-Step Addition and Subtraction Word Problem Task Cards
Solve multi-step addition and subtraction word problems with a set of printable math task cards.
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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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The Escape From Millbrook Manor – Halloween Escape Room
Practice computation skills by solving puzzles with this differentiated Halloween escape room game.
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Number Talks - Three-Digit Addition Task Cards
Build number sense skills with this set of 24 task cards.
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Open-Ended Math Problem Solving - Grades 1, 2, and 3 (PowerPoint Version)
A PowerPoint with 20 open-ended problem solving questions covering a range of mathematical concepts.
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Addition Algorithm PowerPoint Presentation
Use this editable interactive teaching presentation with your students when explaining how to use the addition algorithm with regrouping.
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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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Cut & Paste Fact Family Worksheets
Use these fact family houses worksheet set to practice addition and subtraction fact families with your students.
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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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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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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 Strategies – Worksheet
Assess your students’ knowledge of subtraction strategies with a subtraction assessment.
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Think Addition - Fact Family Worksheets
Use addition to solve subtraction problems with this worksheet.
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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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Ten Frame - Printable Templates
Print a set of 10 blank ten frames to use in various math lessons.
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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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Jump Strategy for Subtraction – Interactive Teaching Slides
Teach your students to subtract two-digit numbers using the jump strategy with an instructional teaching presentation.
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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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Making Ten Memory Game
Practice making ten using ten frames with this fun memory game.
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Adding 2-Digit Numbers - Fall Math Task Cards
Celebrate the coming of Autumn and practice adding 2-digit numbers with this set of 18 task cards.
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Subtracting 2-Digit Numbers Worksheet
Practice 2-digit subtraction with regrouping with this drill and practice worksheet.