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Powers can be very simple or complicated with longer numbers. However, there is a trick for squared powers with numbers ending in five that will fascinate your child. In fact, it can save you a lot of time solving them and help you boost your mental math.
do you want to know what is it about? Well pay attention, because We explain, step by step, how is the trick for squared numbers ending in five.
The trick to solving operations on squared numbers ending in five, It can save your child a lot of time when it comes to doing their homework. And in the exams! We explain, step by step, what it consists of.
1. To check the time your child will save with this trick, nothing like comparing it with the conventional method. We have timed the time it takes to solve this power: 65 ² You can do it yourself and write down how long it took.
2. Now we're going to use the trick for squared numbers ending in five. To do this, you must look at the number of the tens. In this case, 6. You have to multiply that number plus that same number plus 1. Since six plus one is seven, you must multiply 6x7. To the result you add 25 at the end. And now you have it! (Power squared results with numbers ending in five always end in 25).
3. You can also use this trick with larger numbers. For example, with 105. In this case, you take 10 as a reference, the first two digits, 10. Now you multiply 10 by the same number plus one, that is, 11. To the result, you add 25 at the end.
You can read more articles similar to Trick for squared numbers ending in five. Fun math for kids, in the On-site Learning category.