Question

5 Вычисли разными способами. Подчеркни рациональный способ. (819 +45):3128 +172 + 450 + 5025•6•4(50 + 150)•450•(20•5)(45+16)•2Пж помогите (つ≧▽≦)つ ​

Answer 1

1)(819 +45):3=864/3=288
2)128 +172 + 450 + 50=300+500=800
3)25•6•4=25•24=600
4)(50 + 150)•4=200•4=800
5)50•(20•5)=50•100=5000
6)(45+16)•2=61•2=122.

Answer 2

Calculation:

To calculate the expression (819 + 45) : 3128 + 172 + 450 + 5025 • 6 • 4(50 + 150) • 450 • (20 • 5)(45 + 16) • 2, we can break it down into smaller parts and solve them step by step.

1. Let's start with the expression inside the parentheses: (819 + 45). The sum of 819 and 45 is 864. 2. Next, we have the division: 864 : 3128. The result of this division is approximately 0.276. 3. Moving on to the addition: 0.276 + 172 + 450 + 5025. The sum of these numbers is 5647.276. 4. Now, let's calculate the multiplication: 5647.276 • 6 • 4. The result is 135431.424. 5. Continuing with the multiplication: 135431.424(50 + 150). The sum inside the parentheses is 200, so the result is 27086284.8. 6. Next, we have another multiplication: 27086284.8 • 450. The result is 12188827856. 7. Moving on to the next multiplication: 12188827856 • (20 • 5). The result of the multiplication inside the parentheses is 1000, so the final result is 12188827856000. 8. Finally, we have the last multiplication: 12188827856000 • (45 + 16) • 2. The sum inside the parentheses is 61, so the result is 1485929340672000.

Therefore, the value of the expression (819 + 45) : 3128 + 172 + 450 + 5025 • 6 • 4(50 + 150) • 450 • (20 • 5)(45 + 16) • 2 is 1485929340672000.

Among the different methods used to calculate the expression, the most rational method is to break down the expression into smaller parts and solve them step by step, as shown above. This approach ensures accuracy