Year 5 Angles Worksheet — Level 3 — Practice Set 4 — Answers
Answer sheet with worked solutions for the Year 5 angles worksheet.
Success TutoringWorksheetsAnswer sheetYear 5 · Mathematics · AnglesYear 5 Angles Worksheet — Level 3 — Practice Set 4 — Answers
State the angle rule you use.
1.Two angles on a straight line are 132° and x°. Find x.
Answer: x = 48
- Angles on a straight line add to 180°
- x = 180 − 132 = 48
2.Three angles meet at a point: 65°, 64° and x°. Find x.
Answer: x = 231
- Angles at a point add to 360°
- x = 360 − 65 − 64 = 231
3.Three angles meet at a point: 65°, 82° and x°. Find x.
Answer: x = 213
- Angles at a point add to 360°
- x = 360 − 65 − 82 = 213
4.Three angles meet at a point: 100°, 118° and x°. Find x.
Answer: x = 142
- Angles at a point add to 360°
- x = 360 − 100 − 118 = 142
5.Two angles on a straight line are 62° and x°. Find x.
Answer: x = 118
- Angles on a straight line add to 180°
- x = 180 − 62 = 118
6.Three angles meet at a point: 41°, 53° and x°. Find x.
Answer: x = 266
- Angles at a point add to 360°
- x = 360 − 41 − 53 = 266
7.Two angles of a triangle are 61° and 104°. Find the third angle.
Answer: 15°
- Angles in a triangle add to 180°
- 180 − 61 − 104 = 15
8.Two angles on a straight line are 138° and x°. Find x.
Answer: x = 42
- Angles on a straight line add to 180°
- x = 180 − 138 = 42
9.Two angles on a straight line are 113° and x°. Find x.
Answer: x = 67
- Angles on a straight line add to 180°
- x = 180 − 113 = 67
10.Two angles of a triangle are 30° and 67°. Find the third angle.
Answer: 83°
- Angles in a triangle add to 180°
- 180 − 30 − 67 = 83
Marking tips
- Give credit for correct method even when the final answer slips — the working shows where the thinking went right.
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