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Partial Products — Two Digits by One is a free printable Grade 4 math worksheet on splitting the two-digit factor into tens and ones, aligned to Common Core standard 4.NBT.B.5. It prints 10 questions with an answer key on its own sheet of paper, in 25 versions that each ask different questions, so no two students in the class work from the same page. Print it from the browser or download it as a PDF — no account, no email.

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All 25 sets ask different questions.

Partial Products — Two Digits by One

4.NBT.B.5

NameDate

Fill in each part, then the total.

1.77 × 6 = 70 × 6 + 7 × 6 = ___ + ___ = ___
2.53 × 6 = 50 × 6 + 3 × 6 = ___ + ___ = ___
3.76 × 7 = 70 × 7 + 6 × 7 = ___ + ___ = ___
4.73 × 7 = 70 × 7 + 3 × 7 = ___ + ___ = ___
5.52 × 4 = 50 × 4 + 2 × 4 = ___ + ___ = ___
6.18 × 5 = 10 × 5 + 8 × 5 = ___ + ___ = ___
7.77 × 5 = 70 × 5 + 7 × 5 = ___ + ___ = ___
8.89 × 5 = 80 × 5 + 9 × 5 = ___ + ___ = ___
9.63 × 5 = 60 × 5 + 3 × 5 = ___ + ___ = ___
10.29 × 4 = 20 × 4 + 9 × 4 = ___ + ___ = ___

LessonPrint · 4.NBT.B.5 · Set 1 · free to copy for classroom use

Answer key — Partial Products — Two Digits by One

Set 1. Prints on its own sheet.

  1. 1.420 + 42 = 462
  2. 2.300 + 18 = 318
  3. 3.490 + 42 = 532
  4. 4.490 + 21 = 511
  5. 5.200 + 8 = 208
  6. 6.50 + 40 = 90
  7. 7.350 + 35 = 385
  8. 8.400 + 45 = 445
  9. 9.300 + 15 = 315
  10. 10.80 + 36 = 116

Questions about Partial Products — Two Digits by One

What does the Partial Products — Two Digits by One worksheet cover?

It practices splitting the two-digit factor into tens and ones — 10 questions for Grade 4, all on Common Core 4.NBT.B.5: Multiply larger numbers. The instruction to students is “Fill in each part, then the total”, and the answer key follows on the next sheet.

Which Common Core standard does Partial Products — Two Digits by One practice?

CCSS.MATH.CONTENT.4.NBT.B.5 — 4.NBT.B.5, under Number & Operations in Base Ten for Grade 4. The published standard reads: “Multiply a whole number of up to four digits by a one-digit whole number, and multiply two two-digit numbers, using strategies based on place value and the properties of operations.” The worksheet assesses that standard rather than a paraphrase of it.

What age or grade is this worksheet for?

Partial Products — Two Digits by One is written for Grade 4, typically ages 9-10. It is one of the sheets on 4.NBT.B.5, so it suits any student working at that standard — including older students revisiting it and younger ones working ahead.

Does Partial Products — Two Digits by One come with an answer key?

Yes. All 10 answers are generated from the same problems as the questions, so the key cannot drift out of step with the sheet. It starts on a fresh sheet of paper, after the questions, so it is not handed out with the class by accident.

How many different versions of Partial Products — Two Digits by One can I print?

25 — one per student, and all 25 ask different questions. Set 1 downloads the whole class as a single PDF. Every version is fixed to its own address, so a sheet printed today holds the same problems when you reopen it next week.

Is Partial Products — Two Digits by One free to print and photocopy?

Yes. Partial Products — Two Digits by One, its answer key and its 25 versions are free to print and photocopy for your own class, with no account, no email capture and no subscription at the download step. Please do not resell them or republish them as your own.

More practice for 4.NBT.B.5

Multiply larger numbers.

All Grade 4 worksheets

Last reviewed 2026-09-05. Aligned to 4.NBT.B.5 of the Common Core State Standards for Mathematics.