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Strategies for adding within 1,000 Learn Adding 3-digit numbers (no regrouping) Addition using groups of 10 and 100

Practice Commutative and associative properties of addition with integers Get 3 of 4 questions to level up!

Mar 15, 2021 · What do Khan Academy’s interactive math worksheets cover? Our 100,000+ practice questions cover every math topic from arithmetic to calculus, as well as ELA, Science, Social …

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 regrouping, borrowing, and word problems.

Learn early elementary math—counting, shapes, basic addition and subtraction, and more.

Created by experts, Khan Academy’s library of trusted, standards-aligned practice and lessons covers math K-12 through early college, grammar, science, history, AP®, SAT®, and more.

Learn sixth grade math—ratios, exponents, long division, negative numbers, geometry, statistics, and more. (aligned with Common Core standards)

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 …