CBSE Class 5 Mathematics Angles as Turns Worksheet Set 02

Fill in the Blanks

Question. When the minute hand travels by 15 minutes, it has made a ______ turn of the circle.
Answer: 1/4
Explanation: 15 minutes is one-fourth of the 60 minutes on a clock face.

Question. When the minute hand has completed a full-circle, it has moved by ______ minutes.
Answer: 60
Explanation: The minute hand takes one whole hour, which is 60 minutes, to make a full circle.

Question. Reema makes two half turns in the same direction. It is like a ______ turn.
Answer: full
Explanation: Adding two half turns together (1/2 + 1/2) brings you all the way back around to a full turn.

Question. When the minute hand advances by 45 minutes, it has made a ______ turn of the circle.
Answer: 3/4
Explanation: 45 minutes is three 15-minute chunks, which equals 3/4 of a full circle.

Question. When the minute hand has turned by 1/6 of a full turn, it has travelled by ______ minutes.
Answer: 10
Explanation: Divide 60 minutes by 6 to find that 1/6 of an hour is 10 minutes.

Question. What happens if she completes 2 quarter turns in the same direction? It is like a ______ turn.
Answer: half
Explanation: Two quarters put together (1/4 + 1/4) equal one-half of a turn.

Question. When the minute hand has rotated by 1/12 of a full turn, it has moved by ______ minutes.
Answer: 5
Explanation: There are 12 numbers on a clock; moving from one number to the next is 5 minutes.

Question. When the minute hand has turned by 4/12 of a full turn, it has passed by ______ minutes.
Answer: 20
Explanation: 4/12 simplifies to 1/3, and 1/3 of 60 minutes equals 20 minutes.

Question. What happens if she takes 4 quarter turns in the same way? It is like a ______ turn.
Answer: full
Explanation: Four quarter turns make four quarters (4/4), which is 1 whole full turn.

Question. When the minute hand shifts by 30 minutes, it has made a ______ turn of the circle.
Answer: 1/2
Explanation: 30 minutes is half of 60 minutes, so it is a 1/2 turn.

Match the Following

Question. Determine the ending direction for each turn.

Explanation: Each right angle turns you 90 degrees; four right angles make a full circle back to where you started.

Question. What is the greatest possible turn in each of these cases?

Explanation: Objects like doors and file covers can open wide past a right angle, while tongs and scissors only pinch open a small amount.

Question. Look at the angles marked in the house. What angles are you able to find in this house?

Explanation: Square corners are right angles, sharp narrow corners are acute angles, and wide open corners are obtuse angles.

True or False

Question. Turning less than a quarter turn creates an obtuse angle.
Answer: False
Explanation: A turn that is smaller than a quarter turn forms a sharp, narrow angle called an acute angle.

Question. A door with a hinge can easily complete a full turn.
Answer: False
Explanation: A door is stopped by the wall and the frame, so it cannot spin all the way around in a complete circle.

Question. A quarter (1/4) of a full turn appears like a right angle.
Answer: True
Explanation: Turning one-fourth of a full circle forms an exact 'L' shape, which is a right angle.

Question. The direction reverse to clockwise is called anti-clockwise movement.
Answer: True
Explanation: Moving opposite to the direction of the hands on a clock is called anti-clockwise.

Question. Two quarter turns in the same direction form a straight angle.
Answer: True
Explanation: Two 1/4 turns make a 1/2 turn, which opens flat to form a straight line or straight angle.

Questions / Short Question Answers

Question. Padma is facing the toy shop. What place will she face if she makes a half turn clockwise?
Answer: She will face the place exactly opposite to the toy shop.
Explanation: A half turn turns your body completely around so you are looking directly behind you.

Question. Give examples of real-life situations where you notice turns.
Answer: Turning a key in a lock, opening or closing a water tap, spinning a top, swinging a door, and rotating a car steering wheel.
Explanation: We twist and rotate many objects in circles every day to make them work.

Question. What type of angle is created by a quarter turn, less than a quarter turn, and more than a quarter turn but less than a half turn?
Answer: A quarter turn makes a right angle; less than a quarter turn makes an acute angle; and more than a quarter turn but less than a half turn makes an obtuse angle.
Explanation: Square corners are right angles, smaller corners are acute, and wider openings are obtuse.

Question. Can you identify the child in the picture who has made a full turn? Who has made a half turn? How do you know?
Answer: The child facing the same direction as the starting point made a full turn. The child facing the opposite direction made a half turn. We know this by checking their body directions compared to their starting positions.
Explanation: A full turn brings you back to where you started, while a half turn points you the other way.

Question. Do any of the listed objects make a full turn? Write their names.
Answer: None of the above objects make a full turn.
Explanation: Objects like hinges, scissors, and clips cannot spin in a full circle because they hit a stopper or wall.

Question. What other way can she turn to face the same spot?
Answer: She can take equivalent anti-clockwise turns or complete a full circle (multiples of 4 right angles) to face the same direction.
Explanation: Spinning a full circle (360 degrees) always leaves you looking in the exact same direction.

Question. Do any of the household objects (door with hinge, file cover, scissors, tongs) make a half turn? Write their names.
Answer: Door with hinge, File cover.
Explanation: A door and a book or file cover can open flat like a straight line, which equals a half turn.

Question. Make a 5-sided figure with 2 right angles, 2 obtuse angles, and 1 acute angle in your notebook.
Answer: Students should draw any 5-sided pentagon having 2 square corners (right angles), 2 wide corners (obtuse angles), and 1 sharp corner (acute angle).
Explanation: You can connect five straight lines to form different corner angles like right, wide, and sharp angles.

Question. In which direction do the pointers of a clock move?
Answer: The direction in which the hands of a clock move is called clockwise movement. The opposite movement is called anti-clockwise movement.
Explanation: Clockwise means following the circular path of clock hands, while anti-clockwise goes the reverse way.