4. Rewrite the expression: 4.5 + 15:3 - 5 - 35:7 + 8.5 + 5.5 - 7.5 - 45:5 + 16 + 24:8 (16 + 24) : 8 5. Rewrite

Rewrite the expression:

The expression to rewrite is: 4.5 + 15:3 - 5 - 35:7 + 8.5 + 5.5 - 7.5 - 45:5 + 16 + 24:8.

To rewrite it, we can follow the order of operations, also known as PEMDAS (Parentheses, Exponents, Multiplication and Division from left to right, and Addition and Subtraction from left to right).

First, let's perform the divisions: 15:3 and 35:7. Both divisions equal 5.

The expression becomes: 4.5 + 5 - 5 - 5 + 8.5 + 5.5 - 7.5 - 9 + 16 + 24:8.

Next, let's perform the remaining divisions: 45:5 and 24:8. Both divisions equal 9.

The expression becomes: 4.5 + 5 - 5 - 5 + 8.5 + 5.5 - 7.5 - 9 + 16 + 9.

Now, let's simplify the expression by performing the additions and subtractions from left to right:

4.5 + 5 equals 9.5.

9.5 - 5 equals 4.5.

4.5 - 5 equals -0.5.

-0.5 + 8.5 equals 8.

8 + 5.5 equals 13.5.

13.5 - 7.5 equals 6.

6 - 9 equals -3.

-3 + 16 equals 13.

13 + 9 equals 22.

Therefore, the simplified expression is 22.

Дополнительный материал:

Simplify the expression: 4.5 + 15:3 - 5 - 35:7 + 8.5 + 5.5 - 7.5 - 45:5 + 16 + 24:8.

Совет:

To simplify complex expressions, it is important to remember the order of operations (PEMDAS) and perform calculations step by step.

When dealing with multiple operations, it helps to break down the expression into smaller parts and solve them one by one.

Pay attention to the signs (+ or -) between the numbers and perform the operations carefully.

Упражнение:

Simplify the expression: 3 + 30:5 - 2 - 25:5 + 4 + 6.5 - 3 - 20:4 + 12 + 48:6.