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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.

Set 19 of 25 · the same problems every time you open this link.

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Set 1 has all 25 in a single PDF. All 25 sets ask different questions.

Partial Products — Two Digits by One

4.NBT.B.5

NameDate

Fill in each part, then the total.

1.21 × 5 = 20 × 5 + 1 × 5 = ___ + ___ = ___
2.25 × 7 = 20 × 7 + 5 × 7 = ___ + ___ = ___
3.49 × 7 = 40 × 7 + 9 × 7 = ___ + ___ = ___
4.29 × 9 = 20 × 9 + 9 × 9 = ___ + ___ = ___
5.17 × 4 = 10 × 4 + 7 × 4 = ___ + ___ = ___
6.23 × 7 = 20 × 7 + 3 × 7 = ___ + ___ = ___
7.46 × 5 = 40 × 5 + 6 × 5 = ___ + ___ = ___
8.26 × 4 = 20 × 4 + 6 × 4 = ___ + ___ = ___
9.46 × 6 = 40 × 6 + 6 × 6 = ___ + ___ = ___
10.67 × 6 = 60 × 6 + 7 × 6 = ___ + ___ = ___

LessonPrint · 4.NBT.B.5 · Set 19 · free to copy for classroom use

Answer key — Partial Products — Two Digits by One

Set 19. Prints on its own sheet.

  1. 1.100 + 5 = 105
  2. 2.140 + 35 = 175
  3. 3.280 + 63 = 343
  4. 4.180 + 81 = 261
  5. 5.40 + 28 = 68
  6. 6.140 + 21 = 161
  7. 7.200 + 30 = 230
  8. 8.80 + 24 = 104
  9. 9.240 + 36 = 276
  10. 10.360 + 42 = 402

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