95 1×75-956=
854+965-852=
74 1+852+963=
95 1+753-832=
423-5 12+627=
746+958-654=
9987+658-2235=
Math calculation problem! Want the process and the answer! Come on! Urgent! (-5 1/2 1-2 1/5 1)÷3 1/2
=(-2 1 1-5 1 1) × 165438+3/0.
=-65438+77× 165438+3/0.
=-65438+2 1 in 00
- 1+5 ÷ (- 1 in 6) × (-6)
=- 1+5×(-6)×(-6)
=- 1+ 180
= 179
(- 12)÷[(- 16)+40+(-8)]
=(- 12)÷(- 16+40-8)
=(- 12)× 16 part 1
=-three quarters
(65,438+0-3,65,438+0) × (65,438+0+3,65,438+0) ÷ 65,438+0 × (+3,65,438+0)
= (-65438+2/05) × (65438+8/05 )× 5 × 1/3
=- 16 135 part
I hope my answer can help you, please support the team-"let's learn math together"
Seeking a hundred seventh-grade calculation problems has a process and an answer ... urgent! 178× 10 1- 178
84×36+64×84
75×99+2×75
83× 102-83×2
98× 199
123× 18- 123×3+85× 123
50×(34×4)×3
25×(24+ 16)
178×99+ 178
79×42+79+79×57
7300÷25÷4
8 100÷4÷75
It is urgent to find the answer to the application problem of mathematical equation in grade four! 1. A primary school planted 585 trees in the third, fourth and fifth grades. The number of plants in grade 4 is 65438+0.5 of that in grade 5, and the number of plants in grade 3 is 3/4 of that in grade 5. How many trees are there in grade three? 2. The number of rainy days in July is 8/ 1 1 less than that in sunny days, and the number of cloudy days is 3/22 of that in sunny days. How many rainy days are there this month? 3. Grade 5 students in a school 152 students. Boys' 65,438+0/65,438+065,438+0 were selected to take part in the math contest with five girls, and the remaining students were just equal. How many boys and girls are there in this class? There are two 44m long iron wires. If the first one is cut 1/5 and the second one is connected 2.8m, then the two lines are equal. How long are these two wires?
Answer: Grade 3 is 3/4*300=225, Grade 4 is 300* 1/5=60, and Grade 5 is 300.
2. If someone rides a bike from home to the train station, if they drive at the speed of15km/h, they can arrive15min earlier than the train departure time. If he drives at 9 kilometers per hour, he will arrive 15 minutes later than the departure time. Now he plans to arrive 10 minutes earlier than the departure time. How many kilometers should he drive every hour?
Answer: The distance between the two places is:15 * [1-15/60] =11. 25 kilometers
Then arrive 10 minutes in advance, and one hour should be enough: 1 1. 25/[ 1- 10/60]= 13。 5 km
3. Buy flour and rice in the canteen. The weight of flour is twice that of rice. It eats/kloc-0.5 Jin of rice and 20 Jin of flour every day. A few days later, all the rice was eaten, leaving 80 Jin of flour. How many Jin of rice and flour does this canteen buy?
Solution: If the rice is x Jin and the flour is 2X Jin, then the time is X/ 15 days, so there is 20*(X/ 15)+80=2X, and the solution is X= 120. So rice is 120 Jin, and flour is 240 Jin.
The following one is easier.
1:A train travels 10 hour, B train travels for 7 hours, and A train travels 276 kilometers more than B. If the two trains have the same speed, find the speed of the two trains.
Chen and Zhang ride bicycles from the same place in opposite directions at the same time. After 0.5 hours, the distance is 12.5 kilometers. Chen's speed is 12 kilometers per hour. How many kilometers is Zhang's speed? (party)
3. The number of bookcases sold by the furniture factory is one fifth of that of five X cabinets, and the number of bookcases sold is less than that of five X cabinets 120. How many bookcases and five X cabinets were sold? (party)
4. Make a rectangular iron suitcase with a capacity of 60 square decimeters. The length of the bottom is 4 decimeters, the width is 3 decimeters, and what is the height? (party)
5. The master processed 80 parts, which was less than the two companions processed by the apprentice 10. How much has the apprentice processed? (party)
6. The apprentice processed 45 parts, 5 more than half of the master. How much did the master process? (party)
Answer:
1.A X B Y
10X-7Y=267
10/X+7/Y= 1
2. Zhang x
( 12+X)*0.5= 12.5
3. Bookshelf x five cabinets y
X= one fifth *Y
X=Y- 120
4. high x
4*3*X=60
5. Apprentice X
2X- 10=80
6. main x
Half *X+5=45
I hope you are satisfied.
Calculate the following questions. It's due tomorrow, hurry up! Off-line computing needs processes and answers! Provide points that can be reduced! (1)9 7-6 1-5 Branch 2
= 14/ 18-3/ 18-2/5
= 1 1/ 18-2/5
=55/ 120-48/ 120
=7/ 120
(2) 1-(50 branches 7+3/20)+25 branches 16
= 1-7/50-3/20+ 12/50
= 1+5/50-3/20
= 1+2/20-3/20
= 19/20
Four grades two-step calculation application questions with process answers! Title: Li sprayed 820 apple trees in 4 hours. According to this calculation, how many apple trees can be sprayed in 6 hours?
Steps to solve the problem:
1, first calculate how many apple trees Li can spray per hour.
820÷4=205
2. Calculate how many apple trees can be sprayed in 6 hours.
205×6= 1230
3. Get the final answer: Li can spray 1230 apple trees in 6 hours.
Come on, come on! Simple calculation in the fifth grade, as long as you ask and answer, without process, reviewing scores is fast and easy.
First, the guiding method
The simple operation of fractions is the same as that of integers and decimals, and the simple operation rules and properties of integers are also applicable to fractions and decimals. In the related calculation of scores, we should think of rounding.
Second, the basic operation law
1, additive commutative law: a+b = b+a.
Additive associative law: (a+b)+c=a+(b+c)
2. Multiplicative commutative law: a× b = b× a.
Law of multiplicative association: (a×b)c=a(b×c)
Multiplication and distribution law: (a+b)×c=a×c+b×c
3. Rules for removing brackets: put a plus sign (multiplication sign) in front of brackets, and remove the invariant sign of brackets.
The minus sign (division sign) precedes the brackets. When the brackets are removed, the symbol should be changed.
Third, special exercises
1. Use the addition algorithm for simple calculation (applicable to continuous addition formula)
( 1) 1/4+3/5+3/4
(2)2/3+2/5+ 1/3+3/5
2. Simple calculation by using multiplication commutative law and associative law (suitable for continuous multiplication formula)
( 1) 1/3×3/7×7/3
(2) 1/4×3/25×4
(3)3/26×5/7×39
3. Use the laws of multiplication and distribution for simple calculation (formulas applicable to multiplication and addition).
( 1)7/ 1 1×2/7+7/ 1 1+5/7
(2)3/8×4/9+5/9×3/8
(3)25×(3/5+ 1/25)
(4)3/7×6+3/7
(5)( 1/3+5/8)×24
2/3+4/5+ 1/3 2/7+ 1/6+5/7+5/6 1-2/9-7/9 3/5- 1/4+2/5-3/4
Junior high school mathematics: calculate the following questions, processes and answers! Urgent 1, -2-3+8+3+4 = 10. 2、36.8-36.2-3.5=-3.3、 1.75-6.5+6- 1。 75= 12。 five