3 Digit by 1 Digit Multiplication Worksheets
These problems carry the same steps from 2-digit multiplication across a third column. Most answers need regrouping more than once. The sheet has 20 stacked problems for grade 4 and takes about 18 minutes.
- Grade
- Grade 4
- Problems
- 20
- Time
- About 18 minutes
- Standard
- 4.NBT.B.5
Download
Download PDF (US Letter) Download PDF (A4)Two pages: the worksheet, then the answer key. No sign-up needed.
Part A Multiply. Show your work.
- 812× 86496
- 655× 53275
- 414× 72898
- 298× 92682
- 346× 2692
- 142× 81136
- 358× 62148
- 698× 85584
- 251× 92259
- 876× 43504
- 804× 75628
- 175× 91575
Part B Multiply. Check each answer by estimating.
- 749× 32247
- 955× 76685
- 854× 75978
- 404× 52020
- 404× 2808
- 112× 7784
- 141× 3423
- 162× 81296
Tips for teachers and parents
- Work right to left, one column at a time: ones, then tens, then hundreds. Each column is a multiply-then-add-the-carry step.
- Expect two carries in many problems. In 368 × 4, both the ones and the tens produce a carry.
- Check with an estimate by rounding the 3-digit number to the nearest hundred: 368 × 4 is close to 400 × 4 = 1,600.
- For students who struggle, show the same problem in expanded form: 300 × 4 + 60 × 4 + 8 × 4.
Common mistakes
- Losing a carry in the middle column. Ask the student to cross out each carried digit after adding it.
- Writing the final hundreds product in the wrong place. In 368 × 4, the last step gives 14 hundreds, so the answer is 1,472, with 14 written in full on the left.
What to practice next
Move on to 2-digit by 2-digit multiplication, where students multiply by the tens digit and add two partial products.
Frequently asked questions
How do you multiply a 3-digit number by a 1-digit number?
Multiply the ones, tens and hundreds in turn, from right to left, adding any carried number after each multiplication.
What is a good way to check the answers?
Round the 3-digit number to the nearest hundred and multiply. The real answer should be close to that estimate.
Which standard does this worksheet cover?
Common Core 4.NBT.B.5, which includes multiplying numbers up to four digits by a one-digit number.