An easy way to 184 38 116 38 1130?

In the case of mixed multiplication and division, multiply first and multiply first, divide first and divide first, and those with parentheses are counted in parentheses first.

Addition, subtraction, multiplication, and division are collectively referred to as the four operations.

Among them, addition and subtraction are called first-level operations; Multiplication and division are called second-order operations.

In a mixed operation, the number in parentheses is counted first, from the smallest to the largest, and if there is a power, the power is calculated first, and then from the advanced to the lowest.

Extended Materials. 1. Multiplication properties.

Multiply the product of several numbers by a number, so that any factor in the product can be multiplied by this number, and then multiplied by other numbers. For example: (25 3 9) 4=25 4 3 9=2700.

Multiplying the difference between two numbers by one number allows the subtracted number and the subtracted number to be multiplied by this number, and then the resulting product is subtracted. For example: (137-125) 8=137 8-125 8=96.

2. The nature of division operations.

If a number is divided (or multiplied) by a number and multiplied (or divided) by the same number, the number does not change. For example: 68 17 17 = 68 (or 68 17 17 = 68).

A number divided by the product of several numbers can be used to divide this number by the factors in the product. For example: 320 (2 5 8) = 320 2 5 8 = 4.

The quotient of a number divided by two numbers is equal to the number divided by the dividend in the quotient and then multiplied by the divisor in the quotient. For example: 56 (8 4)=56 8 4=28.

The product of several numbers is divided by a number to divide any factor in the product by that number and then multiply by the other factors. For example: 8 72 x 4 9=72 9 8 4=256.

According to the topic, the simple calculation is as follows.

Original = (184+116)x38-1130

300x38-1130

When answering this question, pay attention to the original formula, and put together the simple calculations that can be easily calculated.

Summary. 38*127+42*125 easy method.

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Summary. Hello, easy calculation of 158-12-38 + 42 = 158-38 + (42-12) = 120 + 30 = 150

158-12-38+42.

Hello, easy calculation of 158-12-38 + 42 = 158-38 + (42-12) = 120 + 30 = 150

This question mainly examines the simple calculation rounding method.

I put together the whole formula of addition or subtraction.

Make up a whole ten or a whole hundred.

It's easy to calculate.

(200+3) 18 (splits 203 into 200+3) 18 200+18 3 (multiplying two numbers by the same number is equivalent to multiplying two additions by this number).

3600+54 (add up the two lattic products).

3654 (the result is the same as the result obtained if the calculation is not simplified).

Analysis: Without this observation, this question can be split first, 203 is split into 200+3. Then, the multiplicative distributive property is used to multiply the split 200 and 3 by 18 respectively, and the multiplied products are added to achieve the purpose of simple operation.

Note: When performing simple operations (four operations), you should pay attention to the relationship between the operation symbols (multiplication, division, addition and subtraction) and the big, medium and minor parentheses. Do not skip the level of the wheel to avoid calculation errors.

Hello in love: There is no way to easily calculate the numbers of the old calendar, you can change it like this: 202 + 13 = 200 + 13 + 2 = 213 + 2 = 215

First subtract and then add, and first add and then late bend to reduce the yard is the same as the early type of fruit.

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