4th Grade Divide Three-Digit Numbers worksheets

About this worksheet

This worksheet is keyed to 4. NBT. B. 6, which covers dividends up to four digits, and narrows the practice to exactly three-digit dividends divided by a one-digit divisor: the size that comes right after basic division facts and right before the harder four-digit problems. A fourth grader working through this size range meets the standard algorithm's real challenge for the first time, since a three-digit dividend usually needs at least two steps of "divide, multiply, subtract, bring down" instead of one. This worksheet does not stop at bare computation. Several questions ask what a remainder actually means: why must it always be smaller than the divisor, and what happens to the leftover amount in a real situation, like leftover pencils that are not enough for one more student.

Other questions ask your child to check an answer using multiplication, since divisor times quotient plus remainder must equal the dividend exactly, which is the fastest way to catch a mistake. Word problems set the division in context: packing items into groups, sharing cards among collectors, seating people in rows. Encourage your child to estimate the size of the answer first, roughly how many digits the quotient should have, before working through each digit, since that habit catches a badly placed digit before it becomes a wrong final answer.

What your child will learn

• Divide a three-digit number by a one-digit number
• Find a whole-number quotient and remainder
• Explain why a remainder must always be smaller than the divisor
• Check a division answer using multiplication
• Decide what a remainder means in a real situation