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