Solving Exercise 2 on Page 7 of Math Workbook 4

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Ngày cập nhật gần nhất: 15/4/2026

Solving Exercise 2 on Page 7 of Math Workbook 4 in Practice, Calculate the Expression Value:

Guide to Solving Exercise 2 on Page 7 of Math Workbook 4

Problem:
Calculate the value of the expression:
a) 35 + 3 x n with n = 7; b) 168 - m x 5 with m = 9;
c) 237 - (66 +x) with x = 34; d) 37 x (18 : y) with y = 9.

Solution Method:
a) Replace the given value of n into the expression, then compute to find the result.
b) Substitute the given value of m into the expression, calculate to find the result.
c) Insert the given value of x into the expression, compute to find the result.
d) Replace the given value of y into the expression, calculate to find the result.

Answers:
a) If n = 7 then 35 + 3 x n = 35 + 3 x 7 = 35 + 21 = 56 ;
b) If m = 9 then 168 - m x 5 = 168 - 9 x 5 = 168 - 45 = 123 ;
c) If x = 34 then 237 - (66 + x) = 237 - (66 + 34) = 237 - 100 = 137 ;
d) If y = 9 then 37 x (18 : y) = 37 x (18 : 9) = 37 x 2 = 74.

The solution for exercise 7 page 4 math, Practice consists of 4 exercises, Next, the solution for exercise 2 page 7 SGK math 4. Mytour offers detailed answer suggestions and solution methods for solving Exercise 1 on Page 7 of Math Workbook 4, Solving Exercise 3 on Page 7 of Math Workbook 4, and Solving Exercise 4 on Page 7 of Math Workbook 4. Students need to grasp the knowledge of this lesson.

Frequently Asked Questions

What steps should be taken to solve the expression for n equals 7?

To solve the expression 35 + 3 x n when n = 7, replace n with 7 in the equation, resulting in 35 + 3 x 7, which equals 56.

How do you calculate the value of 168 minus m times 5?

For the expression 168 - m x 5 with m = 9, substitute 9 for m to get 168 - 9 x 5. Calculate it as 168 - 45, resulting in 123.

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