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Solve Math 3 exercises on pages 117 and 118 in Cánh Diều Workbook Volume 1
Solve exercises on pages 117 and 118 in Math 3 Workbook Volume 1, Cánh Diều book
Review of multiplication and division within the range of 1000
1. Solve Exercise 1 Page 117 Math 3 Textbook Grade 3
Problem: a) Number?
b) Calculate:
Step-by-step Guide:
a) Mentally calculate the results of the operations in the direction of the arrows and write the appropriate numbers in the blank spaces.
b) If there are addition, subtraction, multiplication, or division operations in the expression, perform multiplication and division first, then perform addition and subtraction.
Answer:
a)
b)
3 x 4 + 8 = 12 + 8 48 : 8 + 7 = 6 + 7 9 : 9 x 0 = 1 x 0
= 30 = 13 = 0
7 x 10 - 14 = 70 - 14 72 : 9 - 6 = 8 - 6 0 : 6 + 37 = 0 + 37
= 56 = 2 = 37
2. Solve problem 2 on page 117 of Math 3 Textbook Volume 1, Kite Book
Problem: a) Identify the incorrect division and correct it:
b) Place parentheses ( ) in the following expressions to make them correct:
Guide to Solve:
a) Perform the division and draw a conclusion.
b) Place parentheses in the appropriate positions to make the expressions correct.
Answer:
a) The incorrect division is:
32 : 6 = 5 (remainder 1) 63 : 8 = 7 (remainder 6) 9 : 8 = 1 (remainder 0)
Corrected:
32 : 6 = 5 (remainder 2) 63 : 8 = 7 (remainder 7) 9 : 8 = 1 (remainder 1)
b) Place parentheses as follows:
(3 + 4) x 9 = 63 9 : (3 + 6) = 1
(16 - 16) : 2 = 0 12 : (3 x 2) = 2
3. Solve problem 3 on page 117 of Math 3 Textbook Volume 1, Kite Book
Problem: Number?
Guide to Solve:
- To add 4 units (or subtract 4 units) to the given number, add (or subtract) 4 from that number.
- To multiply a number by 4, multiply that number by 4.
- To divide a number by 4, divide that number by 4.
Answer:
- See also: Solving exercises on pages 6, 7 of Math 3 Textbook Volume 1, Kite Book
4. Solve Exercise 4 on Page 118 Math 3 Textbook
Problem: The phoenix tree and the square banyan tree are tree species found in the Truong Sa archipelago of Vietnam. On the occasion of planting trees, people plant 9 phoenix trees, and the number of square banyan trees planted is 4 times the number of phoenix trees. Ask for the total number of phoenix trees and square banyan trees planted on this occasion.
Solution:
+ Find the number of square banyan trees = the number of phoenix trees x 4.
+ The total number of trees planted = The number of phoenix trees + the number of square banyan trees.
Answer:
The number of square banyan trees planted is
9 x 4 = 36 (trees)
The total number of phoenix trees and square banyan trees planted is
9 + 36 = 45 (trees)
Answer: 45 trees
5. Solve Exercise 5 on Page 118 Math 3 Textbook
Problem: Set up and solve the following calculations.
Solution:
a) Set up the calculation so that the digits in the same row align with each other.
Calculate from right to left.
b) Set up the calculation and then divide from left to right.
Answer:
6. Solve Exercise 6 on Page 118 Math 3 Textbook
Problem: Mom has fabric measuring 6 meters for making curtains. Ask:
a) How many curtains can she make from 24 meters of fabric?
b) If Mom makes 11 curtains, how much fabric will she use?
Solution:
a) The number of curtains Mom can make = Total meters of fabric : Meters of fabric for 1 curtain.
b) The meters of fabric needed for 11 curtains = Meters of fabric for 1 curtain x 11.
Answer:
a) Mom can make 4 curtains from 24 meters of fabric
b) If Mom makes 11 curtains, she will use 66 meters of fabric
Final answer: a) 4 curtains b) 66 meters of fabric
Exercise solutions for pages 117 and 118 in Math 3 Workbook, Cánh Diều Book, are provided here. We hope it helps you study well, complete exercises easily and accurately. Additionally, review the lessons to reinforce your knowledge. Only when you have a solid grasp of the concepts can you effectively tackle the exercises.
