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In the division formula without remainder, the divisor divisor × quotient = () A. Divisor B. 0C. Quotient D. dividend
Divisor - divisor × quotient = divisor - divisor = 0
Mischievous in calculating the division with remainder, but the divisor 308 mistakenly wrote 368, the result increased by 5, and the result of remainder is the same. Find the remainder and divisor of this division formula
368-308=60
Divisor: 60 △ 5 = 12
308÷12=25…… eight
The remainder is 8
Fill in the brackets with nine numbers from 1 to 9, the formula is true (each number can only be used once)
（）×（）-（）=（）（）÷（）（）＋（）=（）
8×2-9=56÷14＋3=7
All 4-digit, 5-digit, 6-digit, 7-digit
No more points, alas. Just these points, I'll get them as soon as possible, hoping to help me
Can you repeat it?
And so on
Or I'll tell you the rules
1230/1234/1235/1236/1237/1238/1239/1240/1243/1245/1246/1247/1248/1249/1250/1253/1254/1256/1257/1258/1259/1263/1264/1265/1267/1268/1269/1270/1273/1274/1275/1276/1278、1279/1280/1283/1284/1285/1286/1287/1289/1290/1293、/194、/195/1296/1297/1298/1320/1324/1325/1326/1327/1328/1329/1340/1342/1345/1346/1347/1348/1349/1352/1354/1356/1357/1358/1359/136 0/1362/1364/1365、、、、、、、
A lot. It can't go on like this
c'mon.
What's the matter with such a question
0123456789 can form several groups of 5 digits
9*9*8*7*6
Number one: except 0, there are nine choices
Second digit: there are 9 choices to remove the first digit
Third place: there are 8 choices except the first and second place
And so on is the result
How many 4 digits can be formed with 0123456789
There are 9 possibilities (except 0) in thousand, 9 possibilities (the remaining 9) in hundred, 8 possibilities (the remaining 8) in ten, 7 possibilities (the remaining 7), 9 × 9 × 8 × 7 = 4536
0123456789 which 8 digits can be made up
I don't understand. The number is 10, only 8 make up the number
If it can be used repeatedly, 10 ^ 8-10 ^ 7
If it can't be repeated, 9 * 9 * 8 * 7 * 6 * 5 * 4 * 3
There is a kind of bacteria, which splits into two in one minute, and then splits into four in another minute. It takes one hour to put such a bacteria in the bottle to propagate until the bottle is filled with bacteria. If two such bacteria are put into the bottle at the beginning, then the time required for the bacteria to fill the bottle is ()
A. Half an hour B. 45 minutes C. 59 minutes D. 1 hour
One bacterium splits into two in one minute, four in two minutes, and 2n in n minutes. One bacterium can fill the bottle after one hour's propagation. If two bacteria are put into the bottle at the beginning, the propagation speed is one minute faster than the original one. Therefore, the time required for bacteria to fill the bottle is 59 minutes
(1) If the sum of two numbers is an integer, then the following statement is correct ()
A: Both numbers are positive
B: One family member is positive and the other addend is 0
C: The two numbers are positive and negative, and the absolute value of positive number is large
D. It must belong to one of the above three situations
D A is wrong. If two decimals are added, they can be integers. B is also wrong. Isn't it true that 1 + 1 = 2
If C is not complete, it can be made to be two positive ones. The exclusion method is d
Rectangular coordinate system
Given that points a (0,4), B are on the x-axis, AB and the coordinate axis form a triangle, and the area is 2, then the coordinate of point B is ()
A B (1,0) or (- 1,0) B B (1,0) C B (- 1,0) d b (0, - 1) or (0,1)
As shown in the figure, the known point a can be represented by (3,2).
B（4，0） C （6，0） D （7，2） E （6，3）
Finding the area of Pentagon ABCDE
A
S=4*1/2+(2+4)*2/2=8
RELATED INFORMATIONS
- 1. Xiao Ming is calculating the division with remainder. He mistakenly writes 308 as 368, and the quotient increases by 5, but the remainder is exactly the same. So he can find the divisor and remainder of the formula
- 2. When calculating the division with remainder, 308 is wrongly written as 368, and the quotient is increased by 5 and the remainder is just right
- 3. When Wang Ming calculates the division with remainder, he takes the divisor 125 as 152. The quotient of the result is three times larger than the correct result, but the remainder is exactly the same
- 4. When doing division without remainder, we know that the divisor + divisor x quotient = 60, what is the divisor?
- 5. In a division formula without remainder, the sum of divisor and divisor is 200, the quotient is 4, what is the divisor?
- 6. In division without remainder, the divisor is divided by ten and the divisor is divided by two?
- 7. In a division formula without remainder, the sum of the divisor, divisor and quotient is 200, and the quotient is 2
- 8. In a division without remainder, if the divisor and quotient are equal, what is the divisor?
- 9. Use a simple method to calculate the following questions, and check them. 580 ／ 20 760 ／ 60 1000 ／ 300
- 10. (9x-9) △ 3 = 5.4 (checking calculation) to solve the equation
- 11. In division with remainder, the divisor is equal to several times several plus several
- 12. When Xiao Ming calculates the division with remainder, he wrongly writes the divisor 115 as 151, and the result quotient is 3 larger than the correct result, but the remainder is exactly the same______ ．
- 13. When Xiao Zhang calculates the division with remainder, he takes the divisor 113 as 131, and the result quotient is 3 more than the original, but the remainder is exactly the same, so the remainder of the problem is () A. 、4B. 5C. 6D. 7
- 14. In the division operation with remainder, the divisor is equal to the product of divisor and quotient, plus (). What number should be filled in the brackets below to make the divisor maximum （）÷9=8…… （）
- 15. Subtraction is the inverse of addition, and division is the inverse of multiplication______ ．
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- 17. Xiaoming saved 2000 yuan and 1000 yuan in two forms respectively, and took them out one year later. After deducting the interest income tax (interest × 20%), he could get 43.92 yuan of interest. It is known that the sum of the annual interest rates of these two kinds of savings is 3.24%, so the annual interest rates of these two kinds of savings are respectively 3.24%______ ．
- 18. Comprehensive problems of mathematical algebra a. B is the two real roots of the quadratic equation MX ^ 2 - (Mn + m + 1) x + 4N = 0 with respect to X. C and D are the two real roots of the equation 8y ^ 2 - (2m + 4) y + (5-N) = 0 with respect to y. if a and C are reciprocal to each other, B and D are reciprocal to each other, the values of M and N are obtained
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