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Solving Grade 3 Mathematics on pages 111, 112 in the book Connecting Knowledge with Life
Exploring detailed solutions for exercises on pages 111, 112 of Math 3 Workbook Volume 1, connecting knowledge with life.
Focused practice
Practice 1
1. Solve Exercise 1 Page 111 Math Grade 3 Workbook
Problem: Set up and solve.
Solution Guide:
Step 1: Arrange the digits so that numbers in the same row align vertically.
Step 2: Calculate from right to left.
Answer:
2. Solve Exercise 2 Page 111 Math Grade 3 Workbook
Problem: Number?
Guidance for Solution:
a) To decrease a given number by a certain factor, divide the number by that factor.
To increase a given number by a certain factor, multiply the number by that factor.
b) To find how many times a larger number is than a smaller number, divide the larger number by the smaller one.
Answer:
3. Solve Exercise 3 Page 111 Math Grade 3 Workbook
Problem: The calf weighs 120 kg, and the cow weighs 3 times as much as the calf. How much do both animals weigh in kilograms?
Solution Guide:
Step 1: Calculate the weight of the cow = Weight of the calf x 3.
Step 2: Total weight of both animals = Weight of the calf + Weight of the cow.
Answer:
The cow weighs in kilograms:
120 x 3 = 360 (kg)
The total weight of both animals in kilograms:
120 + 360 = 480 (kg)
Final Answer: 480 kg.
Practice 2
1. Solve Exercise 1 Page 111 Math Grade 3 Workbook
Problem: What expression does each number on the flower represent?
Solution Guide:
Step 1: Evaluate the expression following the rules:
- If the expression has parentheses, perform the operation inside the parentheses first.
- If the expression involves only addition and subtraction, perform the operations from left to right.
Step 2: Match the value of each expression with the appropriate number on the flower.
Answer:
360 + 47 - 102 = 407 - 102
= 305
360 - (335 - 30) = 360 - 305
= 55
132 x (12 - 9) = 132 x 3
= 396
80 + 60 x 2 = 80 + 120
= 200
(150 + 30) : 6 = 180 : 6
= 30
We match as follows:
2. Solve Exercise 2 Page 112 Math Grade 3 Workbook
Problem: The height of my newly planted jackfruit tree was 2 meters. Currently, the jackfruit tree is 6 meters tall. How many times taller is the jackfruit tree now compared to when it was first planted?
Solution Guide: The number of times the jackfruit tree is currently taller than when it was first planted is calculated as follows:
Number of times = Current height of the jackfruit tree : Height of the jackfruit tree when first planted.
Answer:
The jackfruit tree is currently times taller than when first planted:
6 : 2 = 3 (times)
Answer: 3 times
- See more: Solving exercises on pages 113, 114, 115 Math Grade 3 Workbook, the book Connecting knowledge with life
3. Solve Exercise 3 Page 112 Math Grade 3 Workbook
Problem: a)
b) Calculate the value of the expression:
8 x 5 x 2 9 x 2 x 5
Solution Guide:
Step 1: Group the two numbers whose product is a multiple of ten in parentheses.
Step 2: Perform the calculation inside the parentheses first.
Results:
8 x 5 x 2 = 8 x (5 x 2)
= 8 x 10
= 80
9 x 2 x 5 = 9 x (2 x 5)
= 9 x 10
= 90
Thus, the exercises from the Concentration Practice on pages 111, 112 have been solved in detail in the article Solve Exercises on Page 111, 112 Math Grade 3 Workbook, the book Connecting Knowledge with Life. We hope students have gained effective math-solving skills.
