Coding Without Computers

3+ results

3 Digit by 3 Digit Addition Algorithm Steps | Anchor Chart + Student Version

Created by

Teaching the standard algorithm for 3-digit addition can feel simple… until regrouping shows up and half the class freezes. I created this step-by-step visual because my students needed something clear, predictable, and consistent to reference — without me reteaching it every time. This resource breaks down 3-digit by 3-digit addition with regrouping into manageable steps that students can actually follow independently. The anchor chart version is perfect for your math wall, and the student vers

3rd - 4th

Arithmetic, Basic Operations

CCSS

3.NBT.A.2

, 4.NBT.B.4

Multiples Created by Miller Math Market

Created by

Miller Math Market

Memorizing the multiples of numbers 1–12 through rote memory provides foundational benefits that extend across many areas of math and overall cognitive development. Here are the key advantages: Builds Automaticity Quick recall of multiplication facts reduces cognitive load, allowing students to solve problems faster without having to calculate every time. This frees up brainpower for higher-order thinking in areas like word problems, fractions, algebra, and geometry.

3rd - 6th

Arithmetic, Mental Math, Other (Math)

Subtraction Table, Montessori

Created by

CL Smith

How the Teacher Would Use the Subtraction Table Demonstrating Inverse Operations: The teacher can use the table to visually show how subtraction is the opposite of addition. For example, they can point out that if 5 + 3 = 8 on an addition chart, finding 8 - 3 = 5 on the subtraction table uses the exact same numbers in reverse. Identifying Number Patterns: Teachers can guide the class to see patterns, such as how moving diagonally udown the table keeps the difference the same (e.g., 9-5=4, 8-4

PreK - 12th

Arithmetic, Basic Operations