5 26x0 125 2 74 divided by 8 how to easily calculate

The landlord does not know what level (elementary, middle, high school) is calculated. It's just that upstairs is calculated with a friend using 3 + b 3 = (a + b) (a 2 + b 2-ab) and cubic equations. i.e. (see above) the more appropriate method of the presence of hair is only with the primary stage, there is a primary Olympiad mentioned that if the multiplication of two two-digit numbers, the same, if these two 10-digit numbers, which are satisfied in the form of "ab communication", but at the same time meet b + c = 10, which is the sum of their numbers is 10, then they must be thanks to the four-digit format thanks to the first two are one (1 + 1) and the last two are b c.

Observing this problem, 55 3 can be written in such a form 55 55 55, 55 55, and at the same time 45 3 satisfies such a condition. They have a feature like 55 +45 = 100. So, it can solve this problem too.

55 3 +45 3 = 55 55 55 +45 45 45 = 3025 55 2025 45 (this step is to get the answer directly, using a method just written) = 3025 55 + 2025 (100-55) = 3025 55 2025 100-2025 55 (the first and third two fractions are merged to get the next one) = (3025-2025) 55 2025 100 = 1000 55 2025 100 (the answer can be calculated directly at this point.) If you want to continue splitting, you can go down) = 100 550 2025 100 = (550 2025) 100 = 257500 Oh, the second method is more complicated, but the law is relatively simple and easy to use, and students should be able to understand.

Divide the sum by 8 to become 1/8 and bring it in, then combine it.

Summary. simple calculations.

Dear, are there any other problems that the teacher needs to help solve?

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Hope to dress up Zheng Cai and lack oranges.

Summary. Hello, the short calculation process is as follows:

Short-lived. Hello, the short calculation process is as follows:

Simple calculations using multiplicative associativity.