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Solving 3rd-grade Math problems on pages 83 and 84 in Cánh Diều Workbook Volume 2
Solution for exercises on pages 83 and 84 in Math 3 Workbook Volume 2, Cánh Diều:
Area of a Shape
1. Solve Exercise 1 Page 83 Math Grade 3
Problem: Determine the number of square units in each shape.
Solution Guide: Count the number of square units in each shape and answer the question.
Answer:
Area of shape A consists of 3 square units.
Area of shape B consists of 7 square units.
Area of shape C consists of 6 square units.
Area of shape D consists of 7 square units.
2. Solve Exercise 2 Page 84 Math Grade 3
Problem: The shapes below are formed from equal-sized square units.
Answer the following questions:
a) Which shapes have equal areas?
b) Which shape has a larger area than shape A.
Solution Approach:
+ Observe the illustration, count the number of square units to determine the area of each shape.
+ Compare the number of square units and answer the questions.
Answer:
Area of shape A consists of 4 square units.
Area of shape B consists of 3 square units.
Area of shape C consists of 4 square units.
Area of shape D consists of 5 square units.
Area of shape E consists of 4 square units.
a) Shapes A, C, and E have equal areas.
b) Shape D has a larger area than shape A.
- See more: Solve exercises on pages 86 and 87 in Math 3 Workbook Volume 2, Cánh Diều book
3. Solve Exercise 3 Page 84 Math Grade 3
Exercise: Observe the images and follow these instructions:
a) How many square units does Shape A consist of? How many square units does Shape B consist of? How many square units does Shape C consist of?
b) Compare the area of Shape A with the total area of Shapes B and C.
Solution Approach:
+ Examine the illustrations, count the square units to determine the area of each shape.
+ Compare the number of square units and answer the questions.
Answer:
a) The area of Shape A comprises 18 square units.
The area of Shape B comprises 10 square units.
The area of Shape C comprises 8 square units.
b) The area of Shape A is equal to the sum of the areas of Shapes B and C (Because 18 = 10 + 8)
Solving exercises on pages 83 and 84 in Math 3 Workbook Volume 2, Cánh Diều, provides detailed guidance for tackling problems in the Area of a Shape lesson. Pay attention to visualize the approach and grasp the knowledge effectively.
