Skip to content
LessonPrint

Angles on a Straight Line is a free printable Grade 4 maths worksheet on angles summing to one hundred and eighty, aligned to Common Core standard 4.MD.C.5. It prints 12 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.

Next set

One paper per pupil

12345678910111213141516171819202122232425

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

Angles on a Straight Line

4.MD.C.5

NameDate

Work out each answer.

1.Two angles make a straight line. One is 98°. The other is ___
2.Two angles make a straight line. One is 18°. The other is ___
3.Two angles make a straight line. One is 101°. The other is ___
4.Two angles make a straight line. One is 84°. The other is ___
5.Two angles make a straight line. One is 145°. The other is ___
6.Two angles make a straight line. One is 140°. The other is ___
7.Two angles make a straight line. One is 24°. The other is ___
8.Two angles make a straight line. One is 96°. The other is ___
9.Two angles make a straight line. One is 162°. The other is ___
10.Two angles make a straight line. One is 15°. The other is ___
11.Two angles make a straight line. One is 19°. The other is ___
12.Two angles make a straight line. One is 54°. The other is ___

LessonPrint · 4.MD.C.5 · Set 23 · free to copy for classroom use

Answer key — Angles on a Straight Line

Set 23. Prints on its own sheet.

  1. 1.82°
  2. 2.162°
  3. 3.79°
  4. 4.96°
  5. 5.35°
  6. 6.40°
  7. 7.156°
  8. 8.84°
  9. 9.18°
  10. 10.165°
  11. 11.161°
  12. 12.126°

Last reviewed 2026-09-05. Aligned to 4.MD.C.5 of the Common Core State Standards for mathematics.