Let's learn about basic addition by starting with simple examples and moving on to more difficult problems. Two methods for solving these problems are demonstrated: drawing circles to represent …

Sure, you can count to 10, but did you know you can add and subtract numbers within 10 too? It might sound tricky, but don't worry-- you're going to have a blast learning all the different ways numbers …

First, we will learn how addition and subtraction relate. Next, we will add and subtract numbers less than or equal to 20 and solve addition and subtraction word problems. Finally, we will begin adding 2-digit …

Unit 2: Addition and subtraction About this unit In this topic, we will add and subtract whole numbers. The topic starts with 1+1=2 and goes through adding and subtracting within 1000. We will cover …

Learn first grade math—addition, subtraction, length, graphs, time, and shapes. (aligned with Common Core standards)

This Arithmetic course is a refresher of place value and operations (addition, subtraction, division, multiplication, and exponents) for whole numbers, fractions, decimals, and integers.

Learn arithmetic—addition & subtraction, multiplication & division, fractions, decimals, and more.

Practice Negative number addition and subtraction: word problems Get 3 of 4 questions to level up!

Estimating when adding and subtracting Learn Estimating when adding multi-digit numbers Estimating when subtracting large numbers

Word problem addition and subtraction of whole numbers Learn Addition word problem: horses Three digit addition word problems Subtraction word problem: tennis balls