How do you calculate 584 399?

Analysis of the clever calculation process 584+399

Solution: Four operations.

Rules (calculated in order, multiplication and division first and then addition and subtraction, with parentheses first with parentheses, with multiplication.

Calculate the power first) i.e. an off-form operation (recursive equation.

calculations) need to be carried out under the premise of this principle. Problem solving process:

Extended Data Vertical Calculation: Two additions are aligned to the same counting unit.

The numbers on are added, and the addition result is 10 to the high position, and the addition of the high level needs to accumulate the result of the low position to 1.

Problem solving process: Step 1: 4+9=3 to 1 to the high position

Step 2: 8+9+1=8 1 to the high position

Step 3: 5+3+1=9

According to the above calculation steps, the combined calculation result is 983

If you have any doubts, please ask and be satisfied.

Hello, it is possible to write 399 as 400-1The original formula is equal to 584 + 400-1 984 1 983

The above are some of my personal suggestions, I hope it will be helpful to your questions.

584+399 clever calculation, in fact, is very simple, just to make up the whole number.

1.First of all, let's take 399 as 400, so 584 + 400 = 984 and subtract 1 to equal 983.

2.We can also round up 584 to 600, 399 to 400 and 1000 to subtract (16+1) to 983

Use the rounding algorithm, add 399 plus 1 to make up the integer 400, so that 584 plus 400 equals 984, and then subtract 984 from 1 equals 983, so that the result is calculated in seconds.

Summary. Hello, 427+398-605 how to calculate the amount I wrote to you on paper.

427+398-605 How to calculate it.

Hello, 427+398-605 how to calculate the amount I wrote to you on paper.

In**Ahh Over here.

What numbers are not clear.

What numbers are you writing, I can't read it.

Which one is not clear.

You write too big to read clearly.

I can't see this clearly.

Did you write it wrong?

I didn't write it wrong.

You look closely. 420** came.

It's 427

Summary. 538+294 how to calculate.

In fact, it is to borrow 6 from 538 first, so that 294 becomes an integer.

How to calculate 537+54 clever calculation? By observing, the addition of 37 and 54 is not an integer, but if 37 and 53 are added, he can make up an integer, so this formula is written as 537, plus 53 + 1, that is, 54 is split into 53 and 1, so that it can be written as 590 + 1, that is, 591

Think of 537 as 540 3 and 54 as 50+4. The specific column formula is calculated as follows: 537+54 540-3 (50+4) 540+50+(4 3) 590+1 591

How to calculate 537 + 54 through that observation, the 37 uh in 53 is made up into a more integer number, and this 54 can be split into 53 + 1, so this formula can be rewritten as 537 + 53 + 1, that is, 590 + 1 is equal to 591

Split 54 into 53+1, and the mantissa 7+3 equals 10 is easier to calculate.

How to calculate 537+54 clever calculation?

Write the answer directly.

Let's count 486-686 first. Because the last two digits of 486 and 686 are the same as the cover characters, the result is an integer after calculation. Calculate 486 minus 686 equals adding -200 equals 191.

274 + 586 + 436 how to calculate the god of travel.

The nature of the addition of the combination of the sufficiency of the sedan is used.