Question

4. Вычисли. Замени сложение умножением, где это возможно. 4 + 4 + 4 + 4 9+9+9+9+9 18 +18 10 +10 +10 25 +25 +25 5+5+7+6 34 + 4 + 5 +34 17 +17 +17 14 +14 +14 Проверь друга. Есть ли ошибки? Исправь их. 21​

Answer 1

Ответ:

478 100%

кароче точно точно

Answer 2

Ответ:

395

Пошаговое объяснение:

4 + 4 + 4 + 4 = 4*4
9+9+9+9+9 5*9
18 +18 = 18*2
10 +10 +10 = 10*3
25+25 +25 = 25*3

5+5 = 5*2
7
6
34
4
5
34

17 +17 +17 = 3*17

14 +14 +14 = 3*14

4*4+5*9+18*2+10*3+25*3+5*2+7+6+34+4+5+34+3*17+3*14 = 395

Answer 3

Calculation and Error Checking

To calculate the given expression and check for errors, let's break it down step by step:

1. Replace addition with multiplication where possible: - 4 + 4 + 4 + 4 can be replaced with 4 * 4. - 9 + 9 + 9 + 9 + 9 can be replaced with 9 * 5. - 18 + 18 can be replaced with 18 * 2. - 10 + 10 + 10 can be replaced with 10 * 3. - 25 + 25 + 25 can be replaced with 25 * 3. - 5 + 5 remains the same. - 7 + 6 remains the same. - 34 + 4 + 5 can be replaced with 34 + (4 * 5). - 34 + 17 + 17 + 17 can be replaced with 34 + (17 * 3). - 14 + 14 + 14 can be replaced with 14 * 3.

2. Simplify the expression: - 4 * 4 + 9 * 5 + 18 * 2 + 10 * 3 + 25 * 3 + 5 + 5 + 7 + 6 + 34 + (4 * 5) + 34 + (17 * 3) + 14 * 3.

3. Calculate the expression: - 16 + 45 + 36 + 30 + 75 + 5 + 5 + 7 + 6 + 34 + 20 + 34 + 51 + 42. - The result is 401.

4. Check for errors: - The given expression does not contain any obvious errors.

5. Friend's calculation: - The friend's calculation is 21.

6. Error correction: - The correct result is 401, not 21.

Therefore, the correct result is 401.