Primary 4 Math: Angles Practice
Real Primary 4 Math questions on Angles, pulled directly from the Olibits question bank — the same questions a child would actually see, not separately written for this page.
MOE strand: Measurement and Geometry
Curriculum alignment
Mathematics Syllabus, Primary One to Six (MOE, 2021 syllabus)
Taught across P1–P6.
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Real Angles practice questions
The corner of a picture frame forms a 90° angle. What type of angle is this?
Straight
Obtuse
Acute
Right ✓
An angle of 90° is classified as right: acute angles are less than 90°, right angles are exactly 90°, obtuse angles are between 90° and 180°, straight angles are exactly 180°, and reflex angles are between 180° and 360°.
A door is opened all the way until it lies flat against the wall, forming a 180° angle with the frame. What type of angle is this?
Obtuse
Acute
Right
Straight ✓
An angle of 180° is classified as straight: acute angles are less than 90°, right angles are exactly 90°, obtuse angles are between 90° and 180°, straight angles are exactly 180°, and reflex angles are between 180° and 360°.
A spinning office chair is turned through 300°. What type of angle is this?
Acute
Obtuse
Right
Reflex ✓
An angle of 300° is classified as reflex: acute angles are less than 90°, right angles are exactly 90°, obtuse angles are between 90° and 180°, straight angles are exactly 180°, and reflex angles are between 180° and 360°.
A garden sprinkler rotates through 250° with each sweep. What type of angle is this?
Right
Reflex ✓
Acute
Obtuse
An angle of 250° is classified as reflex: acute angles are less than 90°, right angles are exactly 90°, obtuse angles are between 90° and 180°, straight angles are exactly 180°, and reflex angles are between 180° and 360°.