Debug Algorithm
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Addition and Subtraction Standard Algorithm Anchor Chart
This resource is a great visual aid for students learning to add and subtract using Standard Algorithm! It can be used digitally, printed, made in a physical chart or into small reference cards for students. Thank you for downloading!
1st - 8th
Basic Operations, Math
CCSS
2.NBT.A.1
, 2.NBT.B.5
, 2.NBT.B.7
+3
Partial Sums Addition worksheet
Practice problems using the partial sums addition algorithm.
2nd - 4th
Basic Operations, Numbers, Place Value
CCSS
3.NBT.A.1
, 3.NBT.A.2
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Comparing Calculation Strategies Graphic Organizer
Flexible graphic organizer designed to easily compare algorithms in either addition, subtraction, multiplication or division. At the top of the graphic organizer, students write the expression to work with, and below are three spaces for students to complete the problem with the traditional, expanded and estimation algorithms.
1st - 6th
Basic Operations, Math, Mental Math
FREE MULTIPLICATION RESOURCES: Multiplication Tower (English and Spanish)
When it comes to more complex, multi-step algorithms (like division), students often get confused and lost "in the weeds". I have learned tools, like multiple towers, can be a great resource. Remember, we are not necessarily assessing the ability to organize and penmanship, but their understanding of the division (or repeated addition multiplication) algorithm.
2nd - 6th
Basic Operations, Math Test Prep, Numbers
CCSS
2.NBT.A.2
, 2.NBT.B.5
, 2.NBT.B.6
+8
The Pliability of Numbers: Strategies for Working Within Operations
This free packet contains strategies other than the traditional algorithm for addition, subtraction, multiplication, and division. It also examines ways of viewing fractions and basic algebraic equations. This packet is based on ways my students have solved these type of problems at their various levels of understanding. I did not explicitly teach these strategies, but rather, presented them with the opportunity to think about the meaning of these operations through problem solving. These are wa
2nd - 4th
Arithmetic, Basic Operations, Fractions
Addition Strategies in Today's Classroom
This 2 page (can be printed back-to-back) PDF is helpful in explaining to parents why the traditional addition algorithm of "stacking" is not always the best, nor the most efficient, method available to children. This is great Back To School Night information, and may help parents understand your classroom's math program from the very start of the school year. It illustrates some of the strategies that they will see their children learning in today's classroom. This PDF contains examples of thre
1st - 6th
Arithmetic, Basic Operations, Mental Math
Addition Strategies for Today's Classroom
This 2 page (can be printed back-to-back) PDF is helpful in explaining to parents why the traditional addition algorithm of "stacking" is not always the best, nor the most efficient, method available to children. This is great Back To School Night information, and may help parents understand your classroom's math program from the very start of the school year. It illustrates some of the strategies that they will see their children learning in today's classroom. This PDF contains examples of thr
1st - 6th
Arithmetic, Basic Operations, Mental Math
Subtraction Strategies Poster
This colourful and easy-to-follow poster breaks down four essential subtraction strategies—Jump Strategy, Split Strategy, Compensation Strategy, and Traditional Algorithm. Designed to support students who struggle with subtraction, it provides clear, step-by-step examples for each method, helping learners develop confidence and flexibility in solving subtraction problems. Ideal for classroom display or individual study, this resource is perfect for reinforcing subtraction concepts and supporting
2nd - 4th
Basic Operations, Math, Numbers
Addition and Subtraction Place Value Organizers
Some students may find it difficult to line up digits correctly when adding or subtracting large numbers. These place value organizers set up the standard algorithms for addition and subtraction up to the millions for students using blank boxes, and even have the place values labeled!
They can be slipped into a sheet protector and be used with dry-erase markers or on their own with a pencil. Works great for students with not-so-neat handwriting!
2nd - 5th
Arithmetic, Basic Operations, Math
Double digit addition with regrouping step by step visual aid
I created a double digit addition with regrouping visual aid minilesson for my second grade students that receive special education services. I used this format to make a poster for my classroom. This is a completed copy of the step by step visual aid for the addition algorithm when using regrouping. there is also a blank copy in my store for kids to fill out step by step.
1st - 2nd
Basic Operations, Math, Place Value
CCSS
2.NBT.B.5
4-Digit Number of the Day
Great resource for practicing place value with 4-digit numbers. Includes: Different forms: standard form, word form, expanded form, expanded notation, and base 10/picture form. 10 more/less, 100 more/less, and 1,000 more/lessUsing the number of the day to create addition and subtraction algorithms Even or oddIdentifying the digits in a given place valueDecomposing the number a different way Comparing the number using greater than (>), less than (<), and equal to (=)You can enter the numbe
2nd - 5th
Basic Operations, Math, Place Value
CCSS
1.NBT.C.5
, 2.NBT.A.1
, 2.NBT.A.3
+6
Strategy Mini Charts for 3-digit Addition
These 3 mini charts can be used when teaching these strategies (number line, base-10, and partial sums) for 3-digit addition OR can be the basis of an anchor chart you create for instruction or review. The steps are clear, concise, and based on the principles of place value. They help students understand the WHY behind the standard algorithm.
1st - 3rd
Basic Operations, Place Value
Addition and Subtraction Strategies 3.NBT.2
Addition and subtraction reference sheets for students and parents. Common core standard 3.NBT.2 requires that 3rd grade students be able to use a variety of strategies when adding and subtracting numbers within 1,000. These handy reference/study sheets provide clear and concise labeled examples to help your students and their parents understand and remember 10 different strategies:
Addition:
*Expanded Notation
*Making Friendly Numbers
*Compensation
*Making Tens
*Standard Algorithm
Subtraction
2nd - 4th
Basic Operations, Math
CCSS
2.NBT.B.7
, 3.NBT.A.2
, 4.NBT.B.4
When Do Kids Learn the 4 Operations? | Parent Guide to Math Milestones (K–5)
Help families understand when key math skills are taught—and mastered.This one-page, parent-friendly guide clearly outlines when students are introduced to and expected to achieve fluency with the 4 operations: addition, subtraction, multiplication, and division. It’s designed to answer one of the most common parent questions: “When should my child be able to do this?”✅ What’s Included: One-page math milestones chart Timeline of introduction vs. mastery (standard algorithm) Clear, family-frien
K - 5th
Basic Operations, Mental Math, Order of Operations
*FREE* Unicorn Math | 2-Digit Addition No Regrouping | Expanded Form | 1-2 Grade
Give your students a confidence boost with this FREE sample of my best-selling 2-Digit Addition Worksheets! These pages use the Expanded Form Strategy (decomposition) to help students visually understand place value while adding numbers without regrouping. 💖 Love this freebie? 👉[Click here to get the FULL 50-Page version with even more practice!] 🦄🌟 ✨ What is the Expanded Form Strategy? As seen in the worksheets, students break numbers down into Tens and Ones (e.g.56 = 50 + 6) before addi
1st - 2nd
Arithmetic, Basic Operations, Place Value
CCSS
1.NBT.C.4
, 2.NBT.A.3
, 2.NBT.B.5
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