How to calculate 25 times 43 times 877 times 50 times 6

How to calculate 25 times 43 times 877 times 50 times 6

The first one splits 43 into 40 and 3, 40 * 25 = 1000, plus 75 equals 1075
The second one turned 877 into 900-23. I'm not sure. It should be like this. The latter is 300. It's very easy to calculate

There is an urgent need for 30 practical problems and 30 blank filling problems in the first volume of primary school mathematics
There are 100 coins of 1 Fen, 2 fen and 5 fen, totaling 2 yuan. The value of 2 Fen is 13 Fen more than that of 1 Fen. How many coins are there

Let 1, 2 and 5 cents be x, y and 100-x-y respectively
x+2y+5（100-x-y）=200
2y-x=13
There are 51 solutions with 1 score, 32 solutions with 2 scores and 17 solutions with 5 scores

A simple algorithm of 3.52 times 99

3.52×99
=3.52×(100-1)
=3.52×100-3.52×1
=352-3.52
=348.48

If the value of square-x + 1 of 2 / 3 * x is 2, what is the value of square-3x of 2 * x?
If M + N-P = 0, then the value of M (1 / n-1 / P) + n (1 / M-1 / P) - P (1 / M + 1 / N) =?

（1）
2x^2/3-x+1=2
Multiply 3 on both sides
2x^2-3x+3=6
2x^2-3x=3
（2）
From the known formula: M-P = - n m + n = P N-P = - M
m(1/n-1/p)+n(1/m-1/p)-p(1/m+1/n)
= m/n-m/p+n/m-n/p-p/m-p/n
=(m-p)/n-(m+n)/p+(n-p)/m
=-n/n-p/p-m/m
=-3

Grade one final exam 107 English 115 (120 of 0) how about this score

Mathematics and English are not bad, so we have to work harder on Chinese. In key middle schools, the score is above average!

How many decimeters does 30 decimeters and 5 centimeters equal

30.5 decimeters
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It's not easy to answer. Have a good time (*^__ ^*(hee hee

A scenery in my heart
600 words

"Scenery in my heart" a scenery in my heart is a beautiful child of nature. Feeling people's inner world, it is a rural scenery, simple but not luxurious, generous and noble. In the morning, the sun just shows its beautiful posture, her light, warm but not fierce. And people? Get up early to make breakfast, home

The answers to the supplementary exercises on page 15 in the sixth grade of primary school mathematics volume II

X-8% x = 1.38 x + 120% x = 7.70.92x = 1.38 2.2x = 7.7x = 1.5 x = 3.52. (1), 4.5 △ 0.15 = 30 (km) (2), 25.5 △ 85% = 30 (km) 3.340 △ 1-85% = 340 △ 85% = 400 (yuan) 4

Let the solution of the equation 2lnx = 7-2x be x0, then the largest integer solution of the inequality X-2 < x0 about X is______ ．

The solution of ∵ equation 2inx = 7-2x is x0, x0 is a function, the zero point of function y = 2inx-7 + 2x is monotonically increasing in its domain of definition, and y = 7-2x is monotonically decreasing in its domain of definition, so the function y = 2inx-7 + 2x has at most one zero point from F (2) = 2in2-7 + 2 × 2 ＜ 0f (3) = 2in3-7 + 2 × 3 ＞ 0

Using simple algorithm to calculate 99 △ 99 + 1 △ 99 + 2 × (99-3) （99+101）=?

According to the law, (99 + 2) (99-3) (99 + 4) (99-5), (99 + 98) (99-99) (99 + 100) (99 + 101)
The middle term is (99-99) = 0
Zero times any number equals zero, so the answer is zero
This one looks like an IQ problem instead of a math problem