Buzz
Solving Exercise 1 on page 171 of Math 3 Textbook
Problem:
Mental Calculation:
a) Calculate 30000 + 40000 - 50000 = b) Compute 3000 x 2 : 3 =
Find the result of 80000 - (20000 + 30000 ) = Then, calculate 4800 : 8 x 4 =
Determine 80000 - 20000 - 30000 = Finally, solve 4000 : 5 : 2 =
Answer:
a) 30000 + 40000 - 50000 = 20000
(mental calculation: 3 tens + 4 tens - 5 tens = 2 tens thousand)
80000 - (20000 + 30000 ) = 30000
80000 - 20000 - 30000 = 30000
b) Calculate 3000 x 2 : 3 = 2000
Find the result of 4800 : 8 x 4 = 2400
Determine 4000 : 5 : 2 = 400
Solve Exercise 2 on page 171 of Math 3 Textbook
Problem:
Set up and solve:
a) 4083 + 3269 b) 37246 + 1765
Solve the following calculations: 8763 - 2469, 6000 - 879
c) Calculate 3068 x 4, d) Find 40068 : 7
Calculate 6047 x 5 and 6004 : 5
Answer:
Solve Exercise 3 on page 171 of Math 3 Textbook
Problem:
Answer:
Solve Exercise 4 on page 171 of Math 3 Textbook
Solve the Book Purchase Problem
Buying 5 books of the same type costs 28500 dong. How much would you pay for 8 books of the same type?
Answer:
The price for each book is:
Calculate the cost of each book: 28500 : 5 = 5700 (dong)
The total cost for buying 8 books is:
5700 x 8 = 45600 (dong)
Answer: 45600 dong.
Problem:
Task:
Arrange 8 triangles as follows to form the shape on the side.
Answer:
