Calculate 24 points 1,3,6,8 2,4,7,8
12 × 42 is equal to 24 × 21
3,12, - 1, - 12 how to make the result of the formula equal to 24 or - 24
With +- × ÷ Make 5,6,11,13 into a formula with brackets so that the result is 24, and use all four,
8 3 8 4 what symbol is added to make the number equal to 24
Add a mathematical sign to 1 23 4 5 6 7 8 9 so that the number is 1
9 / 1 9 / 1 9 / 1 9 / 1 9 / 1 9 / 1 no matter what mathematical sign is added in the middle, the number will be zero
If the product of three rational numbers is negative, then the number of negative factors is ()
The product of three rational numbers is negative. Among the three rational numbers, there are two______ A negative number
If the product of 100 rational numbers is positive, the number of negative numbers is the most______ The sum of all possible negative numbers is______ ．
If the sum of two numbers is negative, then the two numbers must be () A. Both positive numbers B. both negative numbers C. one positive and one negative D. cannot be determined
If the opposite number of a is - A and the opposite number of - A is a, then a must be an integer and - a must be negative. Why? Come on, I have to sleep and read tomorrow?
If the letter A is used to represent a positive number, what number does - a represent? What is the relationship between - A and - A on the number axis? If the letter a represents a negative number? If the letter a represents 0?
Do 24 math problems With 3 5's and 1's, you can add, subtract, multiply, divide and bracket. How can you calculate 24?
Several simple mathematical problems 1. It is known that the m-2n power of X, the M-1 power of Y and the 6-n power of - 3x, the cubic power of Y are the same kind of terms, and the value of M and N can be obtained 2. Given that the sum of the quadratic power of the polynomial 2x + my-12 and the quadratic power of the polynomial NX - 3Y + 6 does not contain X and Y terms, we can find the value of Mn 3. Party A bought a mobile phone from other places for 3820 yuan and sold it to Party B for 3880 yuan. Party B sold it to Party C for 3900 yuan and Party C sold it to Party A for a loss of 10 yuan. Party a sold it to Party B for 30 yuan cheaper based on the price that Party C sold to him. Party B sold it to Party C for 3840 yuan and Party C sold it to Party A for 3000 yuan, In the end, Party A gave it to an intermediary at the price of 3100 yuan. In this process, did Party A, Party B and Party C lose or earn? How much did they lose or earn? Note: write the formula for each question!
Some simple mathematical problems The school dance team bought five jackets and four skirts for 588 yuan. It is known that the price of one jacket and two skirts is equal. How much is each jacket and skirt? (process) A fruit shop bought a batch of apples at 4.2 yuan per kilogram, and the selling price was 5.5 yuan per kilogram. When there was 180 kg left, it made a profit of 440 yuan in addition to the cost of buying these apples? The price of 4kg apple is equal to that of 7kg banana. 1kg banana is 3.6 yuan cheaper than 1kg apple. How much is 1kg banana? (I think it's very difficult! If the respondent can tell me about it!) P. S. I am a primary school student, if you give me every question clearly, add 20 points! I'm in the bottom line! Is it a question for Grade 5?
I don't know a math problem. I hope my brothers and sisters can help me When m is what value, the function y = (M-3) x 3 - | m | + m + 2 is a positive proportional function? Brothers and sisters, 3 - | m | is on the top of X! Ha ha, the level is poor, can't play that!
Brothers and sisters 1、 The ratio of the quality of chemical fertilizer stored in warehouse A and warehouse B is 12:11. Later, 24 tons of chemical fertilizer have been transported to the warehouse. At this time, the chemical fertilizer stored in warehouse A is 1 / 9 less than that in warehouse B. how many tons of chemical fertilizer were stored in warehouse B? 2、 If you reduce a square by 4cm and increase its opposite side by 11cm, the square becomes a trapezoid. The ratio of the length of the two sides of the trapezoid is 4:9. How about the area of the reminder? 3、 The price ratio of a and B is 7:3. If they both rise by 70 yuan, the price ratio is 7:4. What is the original price of these two commodities?
4. 24 o'clock of 4, 8 and 9
4, 7, 8 and 9 are 24 points
Numbers between 100 and 200 divisible by 7 and 8
Mathematics problem calculation: 1 + 2 + (- 3) + (- 4) + 5 + 6 + (- 7) + (- 8) +... + 97 + 98 + (- 999) + (- 100) Please which master answer for me, please! And explain the answer process! Thank you
What are the three digits that are multiples of 5 in 100-999? You can answer as many as you want.
In 100-999, there are exactly two numbers with the same number, how many? [simple]
Skillfully fill in the operation symbol 9 () 13 () 7 = 100
Please add the operation symbol and bracket between 4 5 and 4 9, the result is 100
4 () 4 () 4 = 2 what operation symbol should be added in the bracket to make both sides of the equation hold
1 = 12, add appropriate operation symbols to make the equation hold? You can't put two together
4 = 2 how to add operation symbol, equality holds
4 = 2 (operation symbol added in the middle)
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