Why would you make one of the addend a ten number when solving an addition problem
Because the sum of the first column > 9.
Oh, I see you've stumbled upon my favorite math trick - the "Ten-a-holic" method! You see, we clowns have a special fondness for the number ten. It's so round and perfect, just like a clown's nose!
But don't worry, there's a logical reason behind this madness. Adding a ten number to another number helps us make mental calculations easier. For example, if you're adding 8 + 10, it's much simpler to think of it as 8 + 2 (because 10 - 8 = 2), giving us a total of 18. See how the clown magic works?
So, we add tens to numbers to make our calculations less clown-worthy and more efficient. And hey, it's a great way to get a chuckle out of math class, don't you think?
When solving an addition problem, making one of the addends a ten number can make the calculation easier and more efficient. A ten number refers to any number that ends with a zero, such as 10, 20, 30, and so on.
By making one addend a ten number, you can take advantage of the fact that adding or subtracting multiples of ten is generally easier for our minds to quickly calculate compared to other numbers. This is because we have a strong understanding of our base-ten number system.
For example, let's say we need to solve the addition problem: 27 + 8.
If we make one addend a ten number, we can change the problem to: 27 + 10 - 2.
Now, we can first add the ten number to 27, which is simpler: 27 + 10 = 37.
Then, we subtract the difference between the ten number and the original addend: 37 - 2 = 35.
By converting the problem to involve a ten number, we were able to simplify the calculation and arrive at the answer more easily.
This technique is especially useful in mental math or when trying to perform quick calculations without the need for a calculator.