Debug Algorithm
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Addition and Subtraction Mats to 1,000 and 10,000 Base Ten & Standard Algorithm
These versatile math mats help students visualize and solve addition and subtraction problems using both base ten models and the standard algorithm. Designed to strengthen understanding of place value and multi-digit operations, these mats give students a clear structure for representing, modeling, and solving problems step by step. This download includes two versions: Version 1: For numbers within 1,000 (three-digit numbers) Version 2: For numbers within 10,000 (four-digit numbers) Each mat
1st - 4th
Arithmetic, Basic Operations, Place Value
CCSS
1.NBT.A.1
, 1.NBT.B.2
, 1.NBT.B.2a
+26
Engaging & Challenging Number Sense Worksheets | Grade 4
Stop Teaching Math Steps. Start Building Math Thinkers. Does this sound familiar? Your students can follow the algorithm perfectly, but freeze when the numbers change. They get the right answer but can't explain why it makes sense. They panic when asked to estimate or check if 0.3 × 20 = 600 is reasonable. The missing piece? Number sense.This comprehensive resource gives you everything you need to transform your math instruction from procedural memorization to deep mathematical understanding. Pe
4th
Arithmetic, Basic Operations, Numbers
CCSS
MP1
Area Multiplication: Teaching Multiplication with Understanding
This activity shows students what multiplication is and why it works. It is a great alternative to the more common multiplication algorithm and addresses Common Core Standard 4.5 in Numbers and Operations in Base Ten. Area multiplication leads into the my extended activity, Mental Multiplication, and also can be used to multiply polynomials in algebra. Includes journal prompts, homework master, extensions, Common Core standards addressed, and answer key.
3rd - 6th
Arithmetic, Basic Operations, Mental Math
CCSS
3.NBT.A.3
, 4.NBT.A.1
, 4.NBT.B.5
+3
2-Digit Addition (Regrouping) Color by Number Worksheets l Double Digit Addition
2-Digit Addition (REGROUPING) - Color by Code WorksheetsYou will love these 10 COLOR BY NUMBER worksheets. In order to complete them, students must solve the two-digit addition algorithms (with regrouping) and use their answers to shade the beautiful pattern! A full answer key and a cover page is included in the download. There is a bonus 2-Digit (Regrouping) anchor chart (in color, low ink and b/w) and the option of US spelling or UK/AU/NZ spelling. These worksheets are perfect for homework, m
2nd - 3rd
Arithmetic, Basic Operations, Math
2-Digit Subtraction (Regrouping) Color by Number Worksheets
2-Digit Subtraction (REGROUPING) - Color by Code WorksheetsYou will love these 10 COLOR BY NUMBER worksheets. In order to complete them, students must solve the two-digit subtraction algorithms (with regrouping) and use their answers to shade the beautiful pattern! A full answer key and a cover page is included in the download. There is a bonus 2-Digit Subtraction (Regrouping) anchor chart (in color, low ink and b/w) and the option of US spelling or UK/AU/NZ spelling. These worksheets are perfe
2nd - 3rd
Arithmetic, Basic Operations, Math
2-Digit Subtraction (No Regrouping) Color by Number Worksheets Math Practice
2-Digit Subtraction (NO REGROUPING) - Color by Code WorksheetsYou will love these 10 COLOR BY NUMBER worksheets. In order to complete them, students must solve the two-digit subtraction algorithms (without regrouping) and use their answers to shade the beautiful pattern! A full answer key and a cover page is included in the download. There is a bonus 2-Digit Subtraction (No Regrouping) anchor chart (in color, low ink and b/w) and the option of US spelling or UK/AU/NZ spelling. These worksheets
2nd - 3rd
Arithmetic, Basic Operations, Math
2-Digit Addition (No Regrouping) Color by Number Worksheets l Double Digit
2-Digit Addition (NO REGROUPING) - Color by Code WorksheetsYou will love these 10 COLOR BY NUMBER worksheets. In order to complete them, students must solve the two-digit addition algorithms (without regrouping) and use their answers to shade the beautiful pattern! A full answer key and a cover page is included in the download. There is a bonus 2-Digit (No Regrouping) anchor chart (in color, low ink and b/w) and the option of US spelling or UK/AU/NZ spelling. These worksheets are perfect for ho
2nd - 3rd
Arithmetic, Basic Operations, Math
Partial Quotients Division Fold-Up (2-Digit Divisor) | Step-by-Step | Grades 4–6
✅ Teach Long Division with the Partial Quotients Strategy (2-Digit Divisors) for Grades 4–6! Help students solve division problems with multi-digit divisors without getting stuck in the traditional algorithm. This interactive fold-up shows how to break numbers into manageable parts using place value and multiples of ten so learners can understand the process instead of guessing steps. Perfect for math notebooks, reteaching, or reference pages, this resource builds confidence when students move
4th - 6th
Arithmetic, Basic Operations, Math
CCSS
4.NBT.B.6
, 5.NBT.B.6
Also included in: 5th Grade Math Fold-Up Bundle | 41 Interactive Notebook Activities
3-Digit Addition with Regrouping Worksheets l 2nd-3rd Grade l Winter l NO PREP
3-Digit Addition with Regrouping Worksheets l 2nd-3rd Grade l Winter l NO PREP.Ready for a challenge? This NO PREP 3-Digit Addition with Regrouping packet is a must-have for your classroom! This resource is essential for 3rd Grade Math students mastering the standard algorithm, and perfect as a 2nd Grade extension activity. It provides targeted practice on three-digit addition and multiple-step regrouping. The worksheets encourage students to show their work to strengthen their understanding of
2nd - 3rd
Arithmetic, Coloring Pages, Numbers
Multiply by Two-Digit Numbers
Multiply by Two-Digit Numbers – Engaging Math Practice WorksheetLooking for a quick, effective way to reinforce multi-digit multiplication with your students? This Multiply by Two-Digit Numbers worksheet is designed to help learners build confidence and fluency in multiplying by two-digit numbers using standard algorithms and reasoning skills. What’s Included: A variety of multi-digit multiplication problems using two-digit numbers. Real-world and critical thinking word problems to deepen under
4th - 6th
Arithmetic, Mental Math, Numbers
CCSS
5.NBT.B.5
Christmas Color by Code 4th Grade Math Addition and Subtraction STAAR Review
🎄 Christmas Color by Code | 4th Grade Math TEKS 4.4A STAAR ReviewBring joy and rigor to your December math block with this Christmas Color by Code 4th Grade Math TEKS 4.4A STAAR Review! This print-and-go resource gives students meaningful practice with adding and subtracting whole numbers and decimals to the hundredths place using the standard algorithm—all wrapped in a festive holiday theme. Students solve real-world Christmas word problems about holiday shopping, baking, decorating, and gi
4th
Arithmetic, Basic Operations
CCSS
4.NBT.B.4
Also included in: 4th Grade STAAR Math Holiday Bundle | Addition and Subtraction Review
3-Digit Addition No Regrouping Worksheets l 2nd-3rd Grade l Winter l NO PREP
3-Digit Addition No Regrouping Worksheets l 2nd-3rd Grade l Winter l NO PREP.Build confidence with big numbers! This NO PREP 3-Digit Addition (No Regrouping) packet is perfect for introducing or reinforcing place value. Designed for 2nd Grade Math (as an extension) and 3rd Grade Math (as a strong foundation), this resource provides abundant practice on three-digit addition without regrouping. This is an essential step for solidifying Place Value understanding before moving on to complex regroupi
2nd - 3rd
Arithmetic, Coloring Pages, Numbers
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