4th Grade Addition Worksheets

Fourth graders should fluently add multi-digit whole numbers using the standard algorithm (CCSS 4.NBT.B.4). They work with numbers up to one million, including problems that require regrouping across multiple places. Students should also add decimals and fractions with like denominators. Estimation becomes a key companion skill: students should round addends before computing to check whether their exact answer is reasonable. Fourth grade is also when students begin adding more than two numbers in a single problem. Worksheets that present multi-digit addition problems with progressively larger numbers, including four-digit and five-digit addends, build fluency with the standard algorithm. Mixed practice that includes estimation alongside exact computation reinforces the habit of checking work.