Видео с ютуба Add And Sub The Number

Adding Number (Up to 20) - 1st Grade Math (1.OA.2)

Addition and Subtraction of Large Numbers

Adding & Subtracting! | Mini Math Movies | Scratch Garden

A Trick for Adding and Subtracting Negative Numbers

Math Antics - Multi-Digit Addition

Как считать быстрее калькулятора — Устный счёт №2 | Сложение и вычитание

Addition by Counting on - Grade 1

Basic Math Addition For Kids | Noodle Kidz Pre-K and Kindergarten Educational Video

2-digit subtract 1-digit | Column Subtraction | Maths with Mrs. B

Сложение и вычитание Джек Хартманн

Meet the Math Facts - Addition & Subtraction Level 3 (FREE) | Preschool Prep Company

Fact Family Triangles - Addition and Subtraction Cartoon | Math for 1st Grade | Kids Academy

Mental Addition and Subtraction Tips — Math Tricks with Arthur Benjamin

Math Antics - Adding & Subtracting Integers

Addition using fingers | Mental addition | addition techniques | Grade 1 | Grade 2

Meet the Math Facts - Addition & Subtraction Level 2 (FREE) | Preschool Prep Company

Addition Using a Number Line | Get Set, and Hop!

3-Digit Addition with Regrouping - 3rd Grade

Addition & Subtraction Number Sentences Song | 1st Grade - 2nd Grade Word Problems

Whole Number Operations | Adding, Subtracting, Multiplying, and Dividing