Question

Найди значения выражений 15 x 18 : 9 + 361 - 954 : 3 и ещё 64 ×(8+2) -- 549 + 36× 9 спасибо большое

Answer 1

15 x 18 : 9 + 361 - 954 : 3
1)15х18=270
2)270:9=30
3)954:3=318
4)30+361=391
5)391-318=73
Ответ: 73.

64 ×(8+2) - 549 + 36× 9
1)8+2=10
2)64х10=640
3)36х9=324
4)640-549=91
5)91+324=415
Ответ: 415.

Answer 2

Calculating the Expressions

To calculate the given expressions, let's break them down step by step.

1. Expression 1: 15 x 18 ÷ 9 To calculate this expression, we follow the order of operations (PEMDAS/BODMAS): - First, we perform the multiplication: 15 x 18 = 270 - Then, we perform the division: 270 ÷ 9 = 30

Therefore, the value of the expression 15 x 18 ÷ 9 is 30.

2. Expression 2: 361 - 954 ÷ 3 To calculate this expression, we follow the order of operations: - First, we perform the division: 954 ÷ 3 = 318 - Then, we perform the subtraction: 361 - 318 = 43

Therefore, the value of the expression 361 - 954 ÷ 3 is 43.

3. Expression 3: 64 × (8 + 2) - 549 ÷ 36 × 9 To calculate this expression, we follow the order of operations: - First, we perform the addition inside the parentheses: 8 + 2 = 10 - Then, we perform the multiplication: 64 × 10 = 640 - Next, we perform the division: 549 ÷ 36 = 15.25 (rounded to 2 decimal places) - Finally, we perform the multiplication: 15.25 × 9 = 137.25 (rounded to 2 decimal places) - Lastly, we perform the subtraction: 640 - 137.25 = 502.75 (rounded to 2 decimal places)

Therefore, the value of the expression 64 × (8 + 2) - 549 ÷ 36 × 9 is approximately 502.75.

Conclusion

The values of the given expressions are as follows: 1. 15 x 18 ÷ 9 = 30 2. 361 - 954 ÷ 3 = 43 3. 64 × (8 + 2) - 549 ÷ 36 × 9 ≈ 502.75