Basic Math Reference Sheet
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Programs & methods
Prime Factorization - Finding Prime Factors of a Number
Finding Prime Factors of a NumberThis product includes charts that you can use as a part of your lesson introducing prime factorization, Following the lesson, you could them print them and post them in the classroom for student reference. You could also give students copies for their notebooks so they will have them handy for easy reference. The task cards provide practice in finding the prime factorization of a number using both the factor tree method and the ladder method. A key is included.
4th - 7th
Basic Operations, Numbers, Other (Math)
Montessori Elevator Positive & Negative Number Line | Math Printable
🚀 Make negative numbers FUN! Your child will love “riding the elevator” while exploring how numbers move above and below zero! This Montessori-inspired Elevator Positive & Negative Number Line turns abstract math into an exciting, hands-on adventure. Perfect for homeschoolers and classrooms alike! 🏙️ 💡 What’s Inside:📘 20 Story Task Cards — “You go up 5 floors… then down 3!” 🧮 10 Number Sentence Cards — bridge stories to math equations 🎯 Printable Number Line (–10 to +10) — use ver
2nd - 4th
Arithmetic, Basic Operations, Numbers
Polar bear tens frame strip 1-20 horizontal
❄️ Polar Bear Double Ten Frame numbers up to 20 🐾 Bring math to life with these horizontal counting strips featuring two ten frames on each card! Students build number sense as they count the fish and write the total, making early math feel clear, visual, and easy to understand 🐟✨. These strips are perfect for practicing numbers 1–20, helping learners see how teens are made (a full ten + extra ones). Great for centers, small groups, intervention time, or quick warm-ups. Just laminate and reus
K - 4th
Basic Operations, Mental Math, Numbers
Addition and Subtraction Flashcards
Attention primary teachers and parents! These are double-sided flashcards so students can practice their addition and subtraction fact fluency together. Print this double-sided and cut slits in the side. Students will be able to look at the addition side and flip the addend to see the answer on the back. If you want to see them in action, you can check out my Instagram and TikTok @heyitskatieortega and I show how they work in action.
PreK - 5th
Basic Operations
CCSS
K.NBT.A.1
, 1.NBT.C.4
, 1.NBT.C.5
+3
Understanding Decimal Numbers and Decimal Operations
Decimal Numbers and Decimal OperationsThis bundle includes: Reading and Writing Decimal NumbersConnecting Fractions and Decimals (includes task cards)Decimal Operations - Addition and Subtraction (Charts)Decimal Operations - Addition and Subtraction (Task Cards)Decimal Operations - Multiplication and Division (Charts)Decimal Operations - Multiplication and Division (Task Cards)This set provides materials for introducing decimal numbers, including how to read and write decimal numbers, as well as
4th - 6th
Basic Operations, Decimals, Place Value
Factors and Multiples of a Number Bundle
This bundle includes the following items: Prime and Composite Numbers Chart (available as a Freebie)Factors and Multiples Chart (available as a Freebie)Divisibility of Numbers - Tests and RulesFinding Factors and GCFFinding Factors and GCF Task CardsFinding Multiples and LCMFinding Multiples and LCM Task CardsYou can use these products to introduce or review the concepts of Prime and Composite NumbersFinding factors and multiples of a numberFinding the GCF and the LCM of a pair or set of number
4th - 6th
Basic Operations, Numbers, Other (Math)
Multiples of a Number Bundle
This bundle includes the following items: Factors and Multiples Chart (available as a Freebie)Finding Multiples and LCMFinding Multiples and LCM Task CardsYou can use these products to introduce or review the concepts of finding multiples of a number and finding the LCM of a pair or set of numbers. The set of task cards (with key) provides practice in these concepts.
4th - 6th
Basic Operations, Numbers, Other (Math)
Factors of a Number Bundle
This bundle includes the following items: Prime and Composite Numbers Chart (available as a Freebie)Factors and Multiples Chart (available as a Freebie)Finding Factors and GCFFinding Factors and GCF Task CardsYou can use these products to introduce or review the concepts of finding factors of a number, finding the GCF of a pair or set of numbers, and identifying prime and composite numbers. The set of task cards (with key) provides practice in all of these concepts, as well as using the GCF to r
4th - 6th
Basic Operations, Numbers, Other (Math)
Finding Multiples of a Number: Multiples and LCM Task Cards
Finding Multiples of a Number and LCM Teachers, the lessons in the companion material for this product (sold separately) provide instructions for finding multiples of a number, then identifying the LCM ( Least Common Multiple) of a pair or set of numbers. This set of task cards can be used as a follow-up to the lesson on finding multiples and LCM. They will provide practice for students in finding multiples and finding the LCM for a pair or set of numbers. This set of task cards includes
4th - 8th
Basic Operations, Numbers, Other (Math)
Also included in: Multiples of a Number Bundle
Decimal Operations: Multiplication and Division - Task Cards
Decimal Operations: Multiplication and DivisionThis set of task cards provides practice for students in both multiplication and division of decimal numbers including digits on both sides of the decimal. These cards work well when used with the companion set (sold separately) that can be used as a part of your a lesson on multiplication and division of decimal numbers. The companion charts include visuals to support understanding of the process. This set of cards include both static and dynamic
4th - 6th
Basic Operations, Decimals, Place Value
Also included in: Understanding Decimal Numbers and Decimal Operations
Decimal Operations: Addition and Subtraction - Task Cards
Decimal Operations: Addition and SubtractionThis set of task cards provides practice for students in both addition and subtraction of decimal numbers including digits on both sides of the decimal. These cards work well when used with the companion set (sold separately) that can be used as a part of your a lesson on addition and subtraction of decimal numbers. The companion charts include visuals to support understanding of the process. This set of cards include both static and dynamic problems
4th - 6th
Basic Operations, Decimals, Place Value
Also included in: Understanding Decimal Numbers and Decimal Operations
4th Grade Operations & Algebraic Thinking SBAC & Montessori-Aligned Task Cards
Task cards are highly versatile, discrete learning tools designed to bridge the gap between traditional Montessori "works" and the rigorous demands of standardized testing like the SBAC. Unlike a traditional worksheet that can feel overwhelming, a task card isolates a single problem or concept, allowing for focused, independent practice that fits perfectly within the Montessori work cycle. Implementation in the ClassroomIn a Montessori environment, these aren't "busy work." They are treated as a
4th
Basic Operations
CCSS
4.OA.A.1
, 4.OA.A.2
, 4.OA.A.3
+2
Finding Factors of a Number: Factors and GCF, Prime/Composite Numbers Task Cards
Finding Factors of a Number, GCF, and Prime and Composite Numbers! Use this product to provide practice for your students in finding factors of a number, then finding the GCF of a pair or set of numbers. It also provides practice in identifying prime and composite numbers. The lessons in the companion material for this product (sold separately) provide step-by-step instructions for finding factors of a number, then identifying the GCF ( Greatest Common Factor) of a pair or set of numbers. Th
4th - 8th
Basic Operations, Numbers, Other (Math)
Also included in: Factors of a Number Bundle
Rekenrek Number Rack Dot Cards 1-20 Red and White
Rekenrek Number Rack Dot Cards 1-20 Red and White Thoughtfully modeled in groups of 5
PreK - 4th
Arithmetic, Basic Operations, Mental Math
Christmas Themed 1-digit multiplication word problems - 3rd/4th grade - low prep
Struggling to find engaging, low-prep resources that cover multiplication for 3rd and 4th grade? Keep your classroom buzzing with excitement and learning, all while minimizing your planning time! Introducing the Christmas Themed 1-digit multiplication word problems - 3rd/4th grade - low prep! This interactive activity is designed to make practicing multiplication word problems an unforgettable time for your 3rd and 4th graders. Packed with Christmas themed real-world word problems, this resourc
3rd - 4th
Basic Operations
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