Solve the following exercise:
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Solve the following exercise:
To avoid confusion in solving the exercise, we will first add the digit 0 to the number 115.32 as follows:
Now let's solve the exercise in order:
Let's multiply the thousandths after the decimal point:
Let's multiply the hundredths after the decimal point:
Let's multiply the tenths after the decimal point:
Finally, let's multiply the whole numbers before the decimal point accordingly:
We'll add the tens to the tens digit and get:
And we obtain the following:
230.422
Choose the correct writing form:
Adding zero to make 115.320 helps you see all place values clearly! It's like having the same number of decimal places in both numbers, making addition much easier and reducing mistakes.
Always write the decimal points directly under each other first! Then fill in the digits. If one number is shorter, imagine zeros in the empty places.
The decimal point in your answer goes directly below the decimal points in the problem. It should line up perfectly in the same column!
It's much easier to add from right to left (like whole numbers) because you can carry over properly. Start with the rightmost digits and work your way left.
You can check by estimating: , so your answer should be close to 230. Since 230.422 is very close, it looks correct!
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