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Addition and subtraction within 1000

Learn
Adding 10 or 100Adding 1s, 10s, and 100sAdding 3-digit numbers (no regrouping)
Practice
Add 10s and 100s (no regrouping)Get 5 of 7 questions to level up!
Learn
Subtracting 1, 10, or 100Subtracting 1s, 10s, and 100sSubtracting 3-digit numbers (no regrouping)
Practice
Subtract 10s and 100s (no regrouping)Get 5 of 7 questions to level up!
Learn
Estimating adding and subtracting 3-digit numbersBreaking apart 3-digit addition problemsSolving 3-digit addition in your headAddition using groups of 10 and 100Adding and subtracting on number line
Practice
Estimate to add multi-digit whole numbersGet 3 of 4 questions to level up!
Break apart 3-digit addition problemsGet 3 of 4 questions to level up!
Add using groups of 10 and 100Get 3 of 4 questions to level up!
Add on a number lineGet 3 of 4 questions to level up!

About this unit

Learn to add and subtract two- and three-digit numbers within 1000.