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O'Clock and Half Past Mixed is a free printable Grade 1 maths worksheet on distinguishing whole and half hours in one set, aligned to Common Core standard 1.MD.B.3. It prints 8 questions with an answer key on its own sheet of paper, in 25 versions that each ask different questions, so no two pupils in the class work from the same page. Print it from the browser or download it as a PDF — no account, no email.

Set 23 of 25 · the same problems every time you open this link.

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One paper per pupil

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

O'Clock and Half Past Mixed

1.MD.B.3

NameDate

What time is it later?

1.121234567891011
What time is it 75 minutes later?
2.121234567891011
What time is it 45 minutes later?
3.121234567891011
What time is it 120 minutes later?
4.121234567891011
What time is it 75 minutes later?
5.121234567891011
What time is it 75 minutes later?
6.121234567891011
What time is it 30 minutes later?
7.121234567891011
What time is it 75 minutes later?
8.121234567891011
What time is it 30 minutes later?

LessonPrint · 1.MD.B.3 · Set 23 · free to copy for classroom use

Answer key — O'Clock and Half Past Mixed

Set 23. Prints on its own sheet.

  1. 1.5:15
  2. 2.8:45
  3. 3.9:30
  4. 4.3:45
  5. 5.12:15
  6. 6.12:00
  7. 7.11:45
  8. 8.11:00

Last reviewed 2026-09-05. Aligned to 1.MD.B.3 of the Common Core State Standards for mathematics.