How do I use the Combo function of Calculator M?

The M+ function on the calculator is to memorize the current number and add it to the cumulative number.

Example: For example, if you calculate the number (2x3) +5x6), you can use the function of M+ to quickly separate the calculations and finally calculate the result. After calculating 2x3=6 first, press m+ to memorize the current number; Then calculate 5x6=30, and then press m+ to start calculating 6 plus 30 inside the calculator, and store the result 36 in memory.

Note: There are three other functions similar to M+.

M-key: M- is the opposite of M+, which is to subtract the number of data from the memory on the current screen, and then store the result.

MR key: When there is data stored in the memory, press the MR key to display the data in the memory on the screen.

MC key: Clear the data stored in the memory and reset the number in it to zero.

The m- and m+ of the calculator are shortcut keys used to store numbers for calculations, and are used as follows:

The function is to store the current input value and then use it for addition operations. For example, if you calculate the result of 12*2+5*3, you can use the storage function of M+, you can enter 12*2, M+ (storage), 5*3, and M+ (storage) in the calculator in turn, and the calculator can automatically add up the results of the two products, and press the [MR] key near M+, and the calculator can directly output the final calculation result.

2.In the same way, the function of m- is to store the current input value and then use it for subtraction operation, for example: calculate the result of 12*2-5*3, then use the storage function of m, you can enter 12*2, m (storage), 5*3, m- (storage) in the calculator in turn, at this time, the calculator will automatically use the previous product minus the next product, when you need to display the result on the screen, also press the nearby [mr] key, the screen can display the final operation result.

M+: Memory addition key, also called accumulation key. It is to calculate the results of the report and add the number that has been stored; Used as a memory function, it can be continuously appended to put the currently displayed value in memory (i.e., add the displayed number to any number already in memory, and the result is stored in memory, but the sum of those numbers is not displayed).

For example, go to buy several kinds of ice cream with small vendors, buy 5 tubes of Wuyang brand ice cream, each 2 tubes; Buy 10 tubes of green hands for a bright mood, each tube is yuan; Buy 15 tubes of Mengniu pudding, each tube is yuan. How much is it?

If you enter "5" first, press the "m+" key (calculate the result of "5" and save it), then enter "10", press the "m+" key (calculate the result of "10" and add it to the number stored earlier), then enter "15", press the "m+" key (calculate the result of "15" and add it to the number stored earlier), and finally press the "mr" key (take out all the saved numbers), then the result "22" will be obtained

m-: Memory subtraction key, also called subtraction key. is the result of the calculation and subtracting the current result from the stored number; Subtract the current display value from the contents of memory (i.e., subtract the displayed number from any number already in memory, and the result is stored in memory, but does not show the difference between those numbers).

When calculating "50-(23+4)", enter "50" first, press "m+" (store "50"), then enter "23+4", press "m-" (the calculation result is "cavity loss 27"), and then press "mr" (subtract the current result "27" from the stored "50"), then the result "23" will be obtained

We often use calculators in our daily life, but many people don't know the function of some function keys on the calculator, so I will teach you how to use the "m+" function on the calculator correctly.

01 Suppose we want to use a calculator to calculate the result of "25*16+18*35+64*15=", usually people will calculate the three multiplications separately and add them, which will be very troublesome, and it is more convenient to use the "m+" key.

02 First, in the calculator, enter "25*16", and then press the "M+" key to get the multiplication result 400.

03 Then continue to enter "18*35", press the "m+" key again, and get the result of the multiplication operation 630.

04 Continue to enter "64*15" and press the "M+" key to get the multiplication result of this step 960.

05 Finally, press the "MR" button on the calculator to easily get the result of the above three multiplications.

Calculators are often used in our daily life, but many people don't know the role of some function keys on the calculator, so I will teach you how to correctly use the "m+" even function on the calculator.

Suppose we want to use a calculator to calculate the result of "25*16+18*35+64*15=", usually people will calculate the three multiplications separately and add them together, which will be very troublesome, and it is more convenient to use the "m+" key to destroy the family.

First, in the calculator, enter "25*16" and press the "M+" key to get the multiplication result of 400.

Then continue to enter "18*35" and press the "M+" key again to get the result of the multiplication operation 630.

Then continue to enter "64*15", press the "M+" key to resist cheating, and get the multiplication result of this step 960.

Finally, press the "MR" button on the calculator to easily get the result of the above three multiplications.

You must have used a calculator, add, subtract, multiply, divide, and press a button to get the answer. But what is the purpose of the row of mc, mr, m-, m+ above? Some people said that they had used a calculator for 20 years, and that row of keys had never been used.

It turns out that m means memorize, r means recall, c stands for clear, and m+ and m- mean add and subtract.

Many people have used calculators all their lives, but they have never touched special buttons such as m+ and m-. In fact, they are like parentheses in mathematical equations, which can be used to perform a sequence of numbers in sequence. How do you use these buttons?

After reading the following brief introduction, it should not be difficult to understand:

m+: Memorize the current number and add it to the cumulative number.

m-: memorizes the current number and adds it to the cumulative number as a negative number. In other words, it means deducting the total from the current number.

mc: memory clean means, that is, to zero the number of the current memory.

mr: The meaning of memory recall, which presents the currently calculated number.

ms: Ignore how many numbers are currently memorized by the spine and directly replace the numbers in memory with the current number.

Example: When calculating (2x3) +5x6) -2x4) numbers, you can use the functions of m+ and m- to quickly separate the calculations, and finally calculate the result. After calculating 2x3=6 first, press m+ to memorize the current number, and then press c (clear) to clear it, you will see the word m appear above the calculator, which means that it has memorized the number; Then calculate 5x6=30 and press m+ to memorize it.

At this point, the calculator already has 6+30 numbers stored! Press C again again.

As for how to use m-? After calculating 2x4=8 first, press m-, which means that the number memorized by the calculator becomes 6+30+(-8), and finally press the mr key again, and you will get the answer of 28. After the calculation is completed, you can press mc to remove all the stored data just now!

Isn't that convenient? When you need to calculate continuously, you no longer need to pick up a pen and paper, write down the numbers and calculate them manually.