Solving Math problems for Grade 3, Cánh Diều Workbook Volume 1, pages 113 and 114.
Solving exercises on pages 113 and 114 of Math 3 Workbook Volume 1, Cánh Diều series:
Reviewing What We've Learned
1. Solving Exercise 1 Page 113 Math Grade 3 Workbook
Problem Statement: Set up and solve:
Solution Guide:
a) Set up the calculation so that digits in the same column are aligned.
Calculate from right to left.
b) Set up the calculation and perform division from left to right.
Answer:
2. Solving Exercise 2 Page 113 Math Grade 3 Workbook
Problem Statement: Calculate the value of each expression:
25 - 15 : 5 101 x (16 - 7)
40 +8 : 2 48 : (8 : 2)
Solution Guide:
- For expressions involving addition, subtraction, multiplication, and division, perform multiplication and division first, then addition and subtraction.
- For expressions containing parentheses ( ), perform operations inside the parentheses first, then outside the parentheses.
Answer:
25 - 15 : 5 = 25 - 3
= 22
101 x (16 - 7) = 101 x 9
= 909
40 + 8 : 2 = 40 + 4
= 44
48 : (8 : 2) = 48 : 4
= 12
3. Solving Exercise 3 Page 113 Math Grade 3 Workbook
Problem Statement: a) Read the names of the following objects in order from the one with the least water to the one with the most water.
b) What is the total amount of water in cups B and D in milliliters?
Solution Guide:
- Apply the conversion 1 liter = 1,000 milliliters
- Compare the amount of water in each object and then answer the question.
Answer:
b) The total amount of water in cups B and D is 590 + 179 = 769 (ml).
4. Solving Exercise 4 Page 113 Math Grade 3 Workbook
Problem Statement: a) How many angles does each shape below have?
b) Use a set square to check which shape in question a has four right angles.
Solution Guide:
a) Observe and count the number of angles in each shape.
b) Use a set square to check and answer the question.
Answer:
a) Shape A has 4 angles.
Shape B has 3 angles.
Shape C has 4 angles.
Shape D has 4 angles.
b) Shape A and Shape D have 4 right angles.
- See also: Solving Exercises on pages 117, 118 Math 3 Workbook Volume 1, Cánh Diều series
5. Solving Exercise 5 Page 114 Math Grade 3 Workbook
Problem Statement: a) Uncle Tam has built a fence around a flower garden in the form of a square with a side length of 32 m as shown below. How long is that fence?
b) Among the shapes below, choose three shapes that can be assembled into a rectangle.
Solution Guide:
- The length of the fence equals the perimeter of the square with a side length of 32 m.
- The perimeter of a square equals the length of one side multiplied by 4.
Answer:
a) The length of that fence is
32 x 3 = 96 (m)
The answer is: 96m
b) We can choose shapes 1, 3, 4 to be able to assemble into a rectangle.
6. Solving Exercise 6 Page 114 Math Grade 3 Workbook
Problem Statement: A square piece of wood has a side length of 2 dm. At each corner of the square, Phuong nails a nail and uses a 4 m long string to wrap around the wood panel at the four nails (see the drawing). How many loops can Phuong wrap?
Solution Guide:
+ Convert all length units to the same unit of measure.
+ Calculate the perimeter of the square wood panel = Length of one side x 4.
+ Number of loops wrapped = Length of the string : Perimeter of the square.
Answer:
Converting 4 m = 40 dm.
The perimeter of the square wood panel is:
2 x 4 = 8 (dm)
The number of loops Phuong can wrap is:
40 : 8 = 5 (loops)
The answer is: 5 loops
Solving exercises on pages 113, 114 Math 3 Workbook Volume 1, Cánh Diều have been updated here, students can refer to strengthen their knowledge and exercise solving techniques.
