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According to the order of operations, we will solve the exercise from left to right.
We will first calculate the addition exercise in the vertical column, since it contains two numbers after the decimal point:
Now we will get the exercise:
Let's remember that:
We will calculate in the vertical column and get:
10.76
Choose the correct writing form:
Adding zeros helps you align columns properly. When you write 2.3 as 2.30, it's easier to see that the 0 lines up with the 1 in 7.61, preventing addition errors.
While possible, vertical alignment is much safer for decimal addition! It helps you avoid place value mistakes and makes it easier to track your decimal point placement.
No problem! Just add zeros to the right of shorter decimals. For example: 0.85, 7.61, and 2.30 all have two decimal places after adding the zero to 2.3.
The decimal point in your answer goes in the same column as the decimal points you aligned in the problem. If you line them up correctly, your answer's decimal point will line up too!
Both ways work! You can add all three numbers in one vertical calculation, or add two first then add the third. The vertical method with all three is often faster and less error-prone.
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