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1 GIÁO VIÊN: NGUYỄN THÀNH LONG Sum Difference ( Tổng hiệu ) ĐĂNG KÍ CHƯƠNG TRÌNH HỌC TRỰC TUYẾN TẠI VINASTUDY.VN QUA Question 1: The sum of ages of a mother and her daughter is 50. The mother is 28 years older than the daughter. How old are they? The age of mother: The age of the daughter: Question 2: There are 33 students in my class. The number of boys is 5 less than the number of girls. How many boys and girls are there? The number of girls: The number of boys: Question 3: Classes 5A and 5B planted 160 trees altogether. Class 5A planted 24 trees more than 5B did. How many trees did each of the two classes plant? Class 5A: Class 5B: Question 4: The total ages of my parents is 68. My father is 2 years older than my mother. How old are they? - Đam mê để thành công Trang 1
2 My mother: My father: Question 5: The rectangle field has a perimeter of 648 m. Its width is 50m shorter than its length. Find its area? Question 6: The arithmetic mean of two numbers is 48. Their difference is 16. Find those numbers? The small number: The great number: Question 7: The sum of two numbers is the smallest 4 digit number. Their difference is the smallest 3 digit number. Find the two numbers? The small number: The great number: Question 8: There are 1600 litres of gasoline in two buckets. The bigger bucket contains 240 litres more than smaller does. How much gasoline is contained by each bucket? The bigger bucket: The smaller bucket: Question 9: There are 2 quintals of rice. The weight of brown rice is 4 yens less than the weight of white rice. Find the weights of two types of rice? The weight of white rice: - Đam mê để thành công Trang 2
3 The weight of brown rice: Question 10: The grandmother gave birth to my mother when she was 24 years old. The total age of two is 146 years now. Find their ages now? The age of mother: The age of grandmother: Question 11: The sum of two consecutive natural numbers is 379. Find the two numbers? The small number: The big number: Question 12: In the figure, the area of quadrilateral ABCE is 120 cm 2 larger than the area of triangle CDE. Find their areas? The area of triangle CDE: The area of quadrilateral ABCE: Question 13: My class has 40 students. The number of fair students is 4 more than the number of good students but is 8 less than the number of ordinary students. Find the number of students of each rank ( There is no poor students ) - Đam mê để thành công Trang 3
4 The number of fair students: The number of good students: The number of ordinary students: Question 14: The perimeter of a triangle ABC is 34 cm. The length of BC is 3 cm more than that of AB but is 4 cm less than of CA. Find the lengths of the three sides? The length of BC: The length of CA: The length of AB: Question 15: The perimeter of a parallelogram ABCD is 60 cm. Knowing that AB is 12 cm longer than BC, find the length of each side of the parallelogram? The length of AB ( and CD ): The length of BC ( and AD ) : Question 16 : Find the two numbers knowing that their sum is 444. If the first number minus the second number then add to their difference, we have a result is 396? The first number: The second number: Question 17 : The average of three numbers is 54. Knowing that the first number is 24 units more than the second number and 9 units less than the third number. Find the third number? The third number: - Đam mê để thành công Trang 4
5 Question 18 : There are 95 textbooks and storybooks altogether. The number of textbooks is 23 less than the number of storybooks. How many textbooks and how many storybooks are there? The number of textbooks is: The number of storybooks is : Question 19 : The sum of three consecutive numbers is 60. Find the three numbers? The first number: The second number: The third number: Question 20 : A perimeter of a rectangle is 48cm, the width is 8 cm less than the length. Find its area? Giáo viên: Nguyễn Thành Long - Đam mê để thành công Trang 5
6 Câu 1: The age of mother: 39 ĐÁP ÁN Câu 11: The small number: 189 The age of the daughter: 11 Câu 2: The number of girls: 19 The number of boys: 14 Câu 3: Class 5A: 92 Class 5B: 68 Câu 12: Câu 13: The big number: 190 The area of triangle CDE: 48 The area of quadrilateral ABCE: 168 The number of fair students: 12 The number of good students: 8 The number of ordinary students: 20 Câu 4: My mother: 33 My father: 35 Câu 14: The length of BC: 11 The length of CA:15 The length of AB: 8 Câu 5: Câu 15: The length of AB ( and CD ): 21 The length of BC ( and AD ) : 9 Câu 6: The small number: 40 The great number: 56 Câu 7: The small number: 450 Câu 16: The first number: 321 Câu The second number: 123 The great number: 550 Câu 8: The bigger bucket: 920 The smaller bucket: 680 Câu 18: The number of textbooks is: 36 The number of storybooks is : 59 Câu 9: The weight of white rice: 120 Câu 19: The first number: 19 The second number: Đam mê để thành công Trang 6
7 The weight of brown rice: 80 The third number: 21 Câu 10: The age of mother: 61 Câu 20: 128 The age of grandmother: Đam mê để thành công Trang 7
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