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=> Check out the latest 7th-grade math solutions here: 7th-grade math solutions
- Solving Math 7 page 42 Volume 1 of the Kite Book - Exercise 2. Set R of real numbers
- Solving Math 7 page 42 Volume 1 of the Horizon Book - Exercise 3: Rounding numbers and estimating results
- Solving Math 7 page 28 Volume 1 of the Knowledge Connection Book - Exercise 5: Getting acquainted with infinite recurring decimals
Solving Math 7 Pages 30, 31
Exercise 54 (Math 7 Textbook Page 30)
Solution:
Applying the property of equal ratio sequences, we have:
Exercise 55 (Math 7 Textbook Page 30)
Find two numbers x and y such that x : 2 = y : (-5) and x - y = 7
Solution:
Applying the property of equal ratio sequences, we have:
The area of a rectangle is found by multiplying its length and width. Knowing that the ratio between its two sides is 2/5 and the perimeter is 28m.
Applying the property of equal ratio sequences, we find:
Combined with the perimeter = 28m => x + y = 14 (m)
=> The area of the rectangle is 4.10 = 40 (square meters)
=> Minh has 8 marbles, Hùng has 16 marbles, and Dũng has 20 marbles.
=> Class 7A planted 80 trees, and class 7B planted 100 trees.
Solution:
Problem 60 (Mathematics Textbook 7 Page 31)
Find x in the following proportion equations:
Solution:
Problem 61 (Mathematics Textbook 7 Page 31)
Solution:
Problem 62 (Mathematics Textbook 7 Page 31)
Solution:
Problem 63 (Mathematics Textbook 7 Page 31)
Solution:
Problem 64 (Mathematics Textbook 7 Page 31)
The number of students in grades 6, 7, 8, 9 is proportional to 9, 8, 7, 6 respectively. Knowing that the number of students in grade 9 is 70 less than the number of students in grade 7. Calculate the number of students in each grade.
Solution:
=> Grade 6 students: 315 (students); Grade 7 students: 280 (students); Grade 8 students: 245 (students); Grade 9 students: 210 (students).
With this math solving textbook for grade 7, students will understand the property of equal ratio sequences through basic theoretical knowledge and specific examples. Along with that, students can thoroughly understand and apply it to the process of solving math problems, effectively and easily solving exercises on pages 30, 31 of grade 7 textbooks. Thanks to the system of solutions for the property of equal ratio sequences, easy to understand and closely follow the textbook program, it will definitely bring convenience to the process of review, reinforcing knowledge, and finding better study methods.
Details of the content of the solution for exercises on pages 48, 49, 50 of Mathematics Textbook 7 Volume 1 have been fully instructed for students to refer to and prepare for better math review for grade 7.
In addition to the content learned, students can prepare and understand the content of the solution for exercises on pages 44, 45 of Mathematics Textbook 7 Volume 1 to grasp the knowledge in the grade 7 math curriculum.
After this lesson, we will together explore how to solve Finite Decimal, and Repeating Decimal problems. To understand more about this topic, please follow the upcoming article.
Guidance on solving exercises on pages 30, 31 of Mathematics Textbook 7 Volume 1 in the math exercise solving section for grade 7. Students can review the solution section on pages 28, 29 of Mathematics Textbook 7 Volume 2 already solved in the previous lesson, or preview the guidance on solving exercises on page 32 of Mathematics Textbook 7 Volume 2 to study grade 7 math better.
