Solving math problems for 4th grade on pages 46-49 of Kite Wings Book 1, Angle Measurement. Degrees (°) involves problems determining the measurement of angles using a protractor. Students can apply their learned knowledge to identify the angle formed by clock hands, relating to objects adjustable to fit different purposes.
Additional references for solving 4th grade math problems:
- Solving 4th grade math problems from Kite Wings book
- Solving 4th grade math problems on pages 24, 25 of KNTT book 1 - Exercise 7: Angle Measurement, Unit of Angle Measurement
- Solving 4th grade math problems on pages 69, 70 of CTST book 1 - Exercise 30: Angle Measurement - Acute Angle, Obtuse Angle, Right Angle
Solving 4th Grade Math Kite Wings Book 1 pages 46-49
Exercise 20: Angle Measurement. Degrees
1. Solve Problem 1 - Kite Class 4 Book 1 Page 48
Problem Statement:
Use a protractor to determine the measurement of the following angles:
Solution Method:
- Position the protractor so that its center aligns with the vertex of the angle. The 0 mark of the protractor lies on one side of the angle.
- Determine which division mark the other side passes through; that will be the measurement of the angle.
Answer:
Angle at vertex M, sides MN and MP, measures 60 degrees
Angle at vertex D, sides DC and DE, measures 120 degrees
Angle at vertex O, sides OA and OB, measures 90 degrees
Angle at vertex H, sides HK and HG, measures 180 degrees
2. Solve Problem 2 - Kite Class 4 Book 1 Page 49
Problem Statement:
Use a protractor to measure the following angles and record their measurements.
Solution Method:
- Place the protractor so its center aligns with the vertex of the angle. The 0 mark of the protractor lies on one side of the angle.
- Determine which division mark the other side passes through; that will be the measurement of the angle.
Answer:
Angle at vertex H with sides HG and HI measures 60 degrees
Angle at vertex L with sides LK and LM measures 120 degrees
Angle at vertex Y with sides YX and YZ measures 180 degrees
Angle at vertex Q with sides QP and QR measures 90 degrees
3. Solve Problem 3 - Kite Class 4 Book 1 Page 49
Problem Statement:
At each time when looking at the clock, the hour and minute hands form an angle.
a) According to you, at each time: at 3 o'clock, at 6 o'clock, at 9 o'clock, what is the measurement of the angle between the two hands?
b) Identify three positions where the angle between the two hands is acute, obtuse.
Solution Method:
Observe the clock images at 3 o'clock, 6 o'clock, 9 o'clock and determine the angle formed by the hour and minute hands.
Answer:
a) We have the following respectively:
At 3 o'clock, the angle between the hour and minute hands measures 90 degrees
At 6 o'clock, the angle between the hour and minute hands measures 180 degrees
At 9 o'clock, the angle between the hour and minute hands measures 90 degrees
b) Three positions where the angle between the two hands is acute: the clock pointing to 1 o'clock, the clock pointing to 2 o'clock, the clock pointing to 10 o'clock, ...
Three positions where the angle between the two hands is obtuse: the clock pointing to 4 o'clock, the clock pointing to 5 o'clock, the clock pointing to 8 o'clock,...
4. Solve Problem 4 - Kite Class 4 Book 1 Page 49
Problem Statement:
In reality, people design many objects that can adjust angles to suit different purposes. Measure and state the angle measurement in each of the following cases:
Solution Method:
- Place the protractor so that its center aligns with the vertex of the angle. The 0 mark of the protractor lies on one side of the angle.
- Determine which division mark the other side passes through; that is the measurement of the angle.
Answer:
Both angles measure 60 degrees.
You are currently viewing the guide for Solving Math Problems Grade 4 pages 46, 47, 48, 49 Kite Book Unit 1 Angle Measurement. Problem 20. You can review the instructions for Solving Math Problems Grade 4 pages 44, 45 Kite Book Unit 1 - Problem 19. Acute angles, obtuse angles, or preview the instructions for Solving Math Problems Grade 4 pages 50, 51, 52, 53 Kite Book Unit 1 - Problem 21. Perpendicular lines. Draw two perpendicular lines to better understand the lesson.
Best wishes for your math studies.
Buzz
