35 22 Simple algorithm for off line calculations

This problem can be easily calculated using the multiplicative distributive property.

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Computation is one of the most important aspects of mathematics and an important foundation for students to learn mathematics and other subjects. Simple calculation accounts for a considerable part of the calculation problems in primary schools, and it is also a knowledge point that students are easy to confuse and make mistakes.

Simple calculation is mainly based on the use of the law of operation, and the law can be flexibly selected for calculation. The laws of operation mainly include the law of addition and combination, the law of addition commutation, the law of multiplication combination, the law of multiplication commutation, and the law of multiplication and distribution.

Several laws of operation can be applied in integers, as well as in decimals, fractions, and percentages, but the solution for each number is still much the same.

One of the most important things to do is to be good at observing problems after mastering several laws of arithmetic. What exactly is the subject to observe?

The first is to observe the characteristics between the operation symbols and the number and the number. Whether the operation symbol conforms to the law, whether the number and the number can be added, subtracted, multiplied, and divided can be made into a whole ten or a whole hundred and a whole thousand.

The second is to observe the characteristics of the question type. What are the characteristics of the question type in the question, which law it conforms to, and choose a feasible calculation technique from it.

The third is to observe the order of operations of the problem, and use the existing laws to find the order of operations you want.

Easy calculation: 43 17 + 47 17 + 91 83, 5 seconds of mental arithmetic 10 seconds off-style, challenge calculator.

Summary. 328 17 Simple algorithm for off-entry calculation.

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The simple arithmetic of 16 27 5 can use the commutative law of multiplication and the law of bright limb clearing hunger rock to swap the positions of 16 and 27, and then calculate 16 5 = 80, and finally calculate 27 80 = 2160.

Regarding the simple calculation of 16x27x5, the calculation steps to solve this problem are as follows: 16x 27 x 5 = (20-4) * 5 * 27 = (100-20)27 = 2700-540 = 2740-540-40 = 2160.

16×27×5 = 2 x8x 3 x9x 5 =(5x 8)x(6x 9)= 40x 54 = 2160

Since 27 = 20 + 7, the original equation is equal to 161 (20 + 7) Hongsun Yuan uses the multiplicative state method of the distributive law is 161 20 + 161 7 = 4347

Summary. 135 5 36 The solution is as follows: =27x36=972135 5 36 Easy way to calculate the off-form.

135 5 36 The answer is as follows: =27x36=972 because he has to do the division first, and then the multiplication.

Multiplication and division, in order.

Off-form calculation is recursive equation calculation, and the operation that writes the calculation process in its entirety is out of vertical calculation.

Good. Because Duojia is 1200m away from the school key, using 1200 75 is equivalent to walking a few more pants Chang Zhong, obviously the time to go is the same as him, so use this time multiplied by 145, which is the distance between Ming and the school manuscript.

Equal to 2320

Simple calculations can be performed using the multiplicative distributive property.

The specific steps are as follows.

The result of the detached Danyou slide rule wheel is 44400000