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Solving exercise 1 on page 172 of Math 2 textbook
Exercise:
Mental Calculation:
a)
2 times 8 equals 12 divided by 2 equals 2 times 9 equals 18 divided by 3 equals
3 times 9 equals 12 divided by 3 equals 5 times 7 equals 45 divided by 5 equals
4 times 5 equals 12 divided by 4 equals 5 times 8 equals 40 divided by 4 equals
5 times 6 equals 15 divided by 5 equals 3 times 6 equals 20 divided by 2 equals
b)
20 times 4 equals 30 times 3 equals 20 times 2 equals 30 times 2 equals
80 divided by 4 equals 90 divided by 3 equals 40 divided by 2 equals 60 divided by 2 equals
Answer:
a)
2 times 8 equals 16 12 divided by 2 equals 6
3 times 9 equals 27 12 divided by 3 equals 4
4 times 5 equals 20 12 divided by 4 equals 3
5 times 6 equals 30 15 divided by 5 equals 3
2 times 9 equals 18 18 divided by 3 equals 6
5 times 7 equals 35 45 divided by 5 equals 9
5 times 8 equals 40 40 divided by 4 equals 10
3 times 6 equals 18 20 divided by 2 equals 10
b)
20 times 4 equals 80 30 times 3 equals 90
80 divided by 4 equals 20 90 divided by 3 equals 30
20 times 2 equals 40 30 times 2 equals 60
40 divided by 2 equals 20 60 divided by 2 equals 30
Solving Exercise 2 on page 172 Mathematics 2 Textbook
Exercise:
Calculate:
4 times 6 plus 16 equals 20 divided by 4 times 6 equals
5 times 7 plus 25 equals 35 plus 25 equals 60
Answer:
4 times 6 plus 16 equals 24 plus 16 equals 40
20 divided by 4 times 6 equals 5 times 6 equals 30
5 times 7 plus 25 equals 35 plus 25 equals 60
30 divided by 5 divided by 2 equals 6 divided by 2 equals 3
Solving exercise 3 on page 172 Mathematics 2 textbook
Exercise:
2A students are arranged in 8 rows, each row has 3 students. How many students are there in class 2A?
Answer:
The number of students in class 2A is:
3 times 8 equals 24 (students)
Answer: 24 students.
Solving exercise 4 on page 172 Mathematics 2 textbook
Exercise:
Answer:
Figure a
Solving exercise 5 on page 172 Mathematics 2 textbook
Exercise:
Find X:
a) X divided by 3 equals 5;
b) 5 times X equals 35.
Answer:
a) X divided by 3 equals 5
X equals 5 times 3
X equals 15
b) 5 times X equals 35
X equals 35 divided by 5
X equals 7
Above is a suggestion for solving Exercise 172 in Math 2 textbook with detailed explanations. Students should prepare for the contents of Exercise 174 and Exercise 175 to improve their understanding of Math 2.
In addition to the above content, students can explore the solution to Exercise 49 in Math 2 textbook to enhance their knowledge of Math 2.
