Buzz
Solving exercise 1 on page 160 of Math textbook for grade 3
Problem statement:
Mental Calculation:
40000 + 30000 + 20000 = 40000 + (30000 + 20000) =
60000 - 20000 - 10000 = 60000 - (20000 + 10000) =
Answer:
Students mentally calculate and record the results as follows:
a) 40000 + 30000 + 20000 = 70000 + 20000 = 90000
b) 40000 + (30000 + 20000) = 40000 + 50000 = 90000
c) 60000 - 20000 - 10000 = 40000 - 10000 = 30000
d) 60000 - (20000 + 10000) = 60000 - 30000 = 30000
Solving exercise 2 on page 160 of Math textbook for grade 3
Problem statement:
Calculate:
Answer:
Solving exercise 3 on page 160 of Math textbook for grade 3
Problem statement:
Xuan Phuong commune has 68700 fruit trees. Xuan Hoa commune has 5200 more fruit trees than Xuan Phuong commune. Xuan Mai commune has 4500 fewer fruit trees than Xuan Hoa commune. How many fruit trees does Xuan Mai commune have?
Answer:
The number of fruit trees in Xuan Hoa commune is:
68700 + 5200 = 73900 (trees)
The number of fruit trees in Xuan Mai commune is:
73900 - 4500 = 69400 (trees)
Answer: 69400 trees.
Solving exercise 4 on page 160 of Math textbook for grade 3
Problem statement:
To buy 5 compasses, it costs 10000 dong. How much money do you need to buy 3 compasses of the same type?
Answer:
The price of each compass is:
10000 : 5 = 2000 (dong)
The total amount for 3 compasses is: 18:12:00
2000 x 3 = 6000 (dong)
Answer: 6000 dong.
It is crucial to grasp the concept of multiplying a number with five digits by a number with one digit, as detailed in the solution for exercise on page 161 of Math textbook for grade 3, as well as the content on page 162 of Math textbook for grade 3 with the subsequent exercise on page 162 of Math textbook for grade 3.
In the Math 3 curriculum, the section on Solving exercises on page 62 of Math textbook for grade 3 is crucial for students to focus on and enhance to improve their Math 3 problem-solving skills.
Detailed instructions for the Solving exercises on page 61 of Math textbook for grade 3 have been provided for students to refer to and prepare for better Math 3 revision.
