This is ridiculous. Let’s take a simple addition problem and make it into a subtraction operation and 2 separate addition operations.
5-2 = 3
8 + 2 = 10
10 + 3 = 13
Yeah, that’s a lot simpler than just 8 + 5 = 13. /s
Here is a wild idea. Have the kids memorize the addition tables and drill the kids with addition flash cards until they know them absolutely cold. To do even worse, teach them multiplication tables in the same manner.
Yeah, I know it’s racist.
“Yeah, that’s a lot simpler than just 8 + 5 = 13. /s”
It’s a very simple example. I find it easier to do larger numbers, in my head, using this method. Question is asked wrong though. Question seems to imply that 10 is the answer, which is a stooped question. Question should be about converting numbers within the problem into numbers that are easier/quicker to use. The stooped question makes things much more difficult to understand something which is basically a very simple and useful process.