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Solving Grade 3 Math Exercise 48 in Bright Horizon's Creative Horizon book
Solving Exercise 48 in Math 3 Workbook Volume 1, Bright Horizon's Creative Horizon:
Mental Multiplication, Division
Practice Section
1. Exercise 1 Page 48 Math Grade 3 Textbook
Problem: Calculate mentally
a) 40 x 3 30 x 3 200 x 5
b) 30 x 5 40 x 3 50 x 2
Solution: Mental multiplication can be done as follows:
40 x 3 = ?
4 tens x 3 = 12 tens
So 40 x 3 = 120
Proceed similarly with the remaining calculations.
Answer:
a) 40 x 3 = 120 30 x 3 = 90 200 x 5 = 1000
b) 30 x 5 = 150 40 x 3 = 120 50 x 2 = 100
2. Exercise 2 Page 48 Math Grade 3 Textbook
Problem: Calculate mentally.
a) 80 : 4 600 : 2 900 : 3
b) 240 : 4 250 : 5 180 : 3
Solution: Division mentally is done as follows:
600 : 3 = ?
6 hundred : 3 = 2 hundred.
So 600 : 3 = 200
Proceed similarly with the remaining calculations.
Answer:
a) 80 : 4 = 20 600 : 2 = 300 900 : 3 = 300
b) 240 : 4 = 60 250 : 5 = 50 180 : 3 = 60
- Xem thêm: Giải bài tập trang 49 SGK Toán 3 Tập 1, sách Chân trời sáng tạo
3. Exercise 3 Page 48 Math Grade 3 Textbook
Problem: Number?
Solution: Perform the calculations according to the arrows and fill in the blanks with appropriate numbers.
Answer:
We hope that through the guidance on solving Exercise 48 in Math 3 Workbook Volume 1, Bright Horizon's Creative Horizon, students can easily do exercises and reinforce their Mental Multiplication and Division skills effectively.
