4 9 3 10 5 9 Easy arithmetic?

4 9 3 10 5 9 Easy arithmetic?

Of course, this is to adjust the 5 9 in the back to the front, and add it to 4 9 first, so that you get 4 9 + 5 9 + 3 10, and then you get 9 9 + 3 10, which is 1 + 3 10, which is equal to one and 3 10

Calculate 4 9 + 5 9 first, then calculate the value with 3 10.

Primitive formula = 4 9 + 5 9 + 3 10

Using the additive associativity to change the order of operations, the result remains the same, so the original formula is equal to 3 10 + (4 9 + 5 9) =

The identification technique first adds 4 9 and 5 9 to equal 1, and then uses one plus 3 10 equals 13 10, but this street change operation does not need ventilation, it is very simple to do, if it is in the original order, it needs to be divided first, and then calculated.

This very simple problem is to add the same denominator, it becomes 4 9 + 5 9 + 3 10, the first addition is equal to 1, 1 + 3 10, and finally equal to one and 3 10

Because it is easy to calculate, you can adjust the order of precedence, you can calculate the same denominator first, so 4 9 + 5 9 = 1, and then calculate 1 + 3 10 = 13 10

The addition and subtraction of fractions first unifies the denominator, 4 9 + 3 10 + 5 9

1 and 3/10

This is a mix of multiplication, addition, and subtraction. From the point of view of the problem, we can do this: Therefore, through observation, we found the characteristics of this calculation problem, performed two calculations, and extracted the common factors separately.

This calculation problem is made very simple, and the calculation is very simple.

This is a simple addition and subtraction problem, you can first calculate the formula with the same denominator, 4 9 + 5 9 = 1, and then calculate 1 + 3 10 = 13 10.

51*48+49*59-49*11 is a mixture of multiplication and subtraction addition, we can do it from the perspective of the problem: 51*48+49*59-49*11=51*48+49*(59-11)=51*48+49*48=48*(51+49)=48*(51+49)=48*(51+49)=48*48*(49)=48*48*(51+49)=48*100=4800. Therefore, by observing how we found the peculiarity of this problem, we made two calculations and extracted a common factor separately The task of calculation became very simple and easy to calculate.

51*48+49*59-49*11 This is a multiplication and subtraction problem. We can do it from the perspective of the problem: 51*48+49*59-49*11=51*48+49*(59-11)=51*48+49*48*(51+49)=48*100=4800.

Therefore, by observing the characteristics of this calculation problem, we performed two calculations and extracted the common factors separately, and this calculation problem became very simple and the calculation was very easy.

If the denominator is the same as the number is added and subtracted, 4 9 + 5 9 = 1, then, 1 + 3 10 is equal to 1 and 3 10.

51 times 48 plus 49 times 59 - 49 times 11 This is a mixture of multiplication, addition, and subtraction. From the point of view of the problem, we can do this: 51*48+49*59-49*11=51*48+49*(59-11)=51*48+49*48=48*(51+49)=48*100=4800.

This calculation problem is made very simple and the calculation is very easy.

Simple calculations are performed using the associative law of addition.

Solution: 4 9-4 Stupid 17+5 Sullen 9-13 17

The associative law of addition refers to the addition of three numbers, adding the first two numbers first, or adding the last two numbers first, and the sum is unchanged. It is expressed in the remaining letters with a hood: a+b+c a+(b+c).

Answer: 0

The first journey is as follows:

4 9-4 17+5 9-13 Greetings to module 17

The fraction of the same denominator is added and subtracted, the denominator does not change the friend, and the numerator is added. Brightening slowly.

Summary. 13 7+5 9) 39 49 There is no simple arithmetic.

Dear hello, I am Qingshuai, an education consulting teacher, I am a high school teacher, with more than 10 years of teaching experience, graduated from Northeast Normal University, majoring in Chinese language and literature, good at further education and employment, knowledge of various subjects in primary and secondary schools. I'm replying to your sleepy questions in Kuaima Town, and it will take about three minutes to sort it out, I hope you will be patient, don't worry, and get back to you immediately.

Thank you, teacher, no, I need it.

The answer is not needed?

You can first convert each fraction into a general score, then add or subtract and simplify the final result. The specific steps are as follows:

First, the denominator of 5 and 2 9 is 180, and the denominator of 12 7 is 63, and we get:

Then you can add and subtract each item and add and subtract each item to obtain:

Finally, 163 180 is reduced to the simplest fraction form: Medium Pure

Thus, a simple calculation of 3 1 4+4 1 5+5 12 7-7 2 9 is 163 180.

This is a series of equal differences with a first term of 5 and a tolerance of 2, the number of terms = (the suspect branch 43-5) Sengai 2+1=38 2+1=19+1=20.

The simple example of 49+6x41+49x3 is included in the following figure.

Simple calculation of the accompaniment before opening the eyes: 49 + 6x41 + 49x349 + 6x41 + 49x3

49x1+49x3+6x49-6x8

49x（1+3+6）-6x8

49x10-48