Elementary school age math problems, elementary school age math problems

14 + 83 = 97 yuan.

Analysis: 14 yuan of things are counted as the purchase price, given **, loss of 14 yuan.

The 100 yuan counterfeit banknote was given to the next-door neighbor and exchanged for real money to find **83 yuan, and he kept 17 yuan in real money.

The next-door neighbor found that the counterfeit banknote was exchanged for the original counterfeit banknote with 100 yuan real banknote, and the loss was 100-17=83 yuan.

So the boss lost a total of 97 yuan.

Lost 100 + 14 + 83 197 yuan.

Because the boss first gave **14 yuan for something, then found **83 yuan, and exchanged 100 yuan with the grocery store, so the boss lost 197 yuan.

lost 197 yuan, because the boss gave **14 yuan of items, and also found **83 yuan, and exchanged 100 yuan of real money for fake money 100 yuan, 14 + 83 + 100 = 197 (yuan).

97 yuan. The exchange of money between the boss and the neighbor is confusing, has no substantive effect, and can be omitted.

In this way, the boss loses 14 + 83 = 97 yuan.

Solution: Start from the beginning.

Getting counterfeit banknotes: Equivalent to not getting or losing money.

From neighbors: +100

Find **: -83

Goods to **: -14

Money returned to neighbors: -100

Loss: +100-83-14-100=-97 Answer: The boss lost 97 yuan.

14 + 83 = 97 yuan.

14 yuan of things, gave **, lost 14 yuan.

100 yuan counterfeit banknote to the neighbor next door and exchanged it back for real money to find **83 yuan, he left 17 yuan real banknote, and the neighbor next door found that the boss of the counterfeit banknote used 100 yuan real money to exchange the original fake banknote back with a loss of 100-17 = 83 yuan.

So the boss lost a total of 97 yuan.

97 yuan. First of all, find out that the 83 yuan is equivalent to his own. Plus the ** for the lost goods.

The correct one is: 83 + 14 = 97

The boss lost 97 yuan. The boss and the neighbor exchanged money without losing money, which is redundant and confusing.

The boss's loss was: 83 yuan and a piece of clothing. "The purchase price is 14 yuan, and the price is 17 yuan"At first glance, the boss lost 17, but after thinking about it carefully, the boss bought the goods for 14 yuan, and he bought 17 to earn 3 yuan, and to lose was to lose 14 yuan.

Counterfeit banknotes: $100.

Cost: 14 RMB.

Profit: 3 yuan.

Change: $83.

Total loss: 3 100 14 83 194 (yuan).

100 yuan minus the profit of 3 yuan per item is 97 yuan.

This process is to exchange a piece of real money for fake money, the loss is 100 and then sell an item for 3 yuan!

In the end, the loss was 97 yuan.

Dizzy, it's really a calculation problem for elementary school students:

The world's per capita arable land area is 950 30%=

The world's per capita water resources.

Although I have given you the answer, I still hope that you can use your pen to calculate it yourself, I am just here to earn points!

950 30% = square meters (arable land area per capita in the world).

10,000 cubic meters (the world's water resources).

950 30% sq.m.).

10,000 cubic meters) A: The world's per capita arable land area and water resources are about square meters and 10,000 cubic meters, respectively.

950 divided by 30% = square meters.

Divide by 25% = 10,000 cubic meters.

The world's per capita arable land area is 950 30%=

The world's per capita water resources.

Hello, I'm a second-year junior high school student...

Answer: If the younger brother is x years old, the elder brother is x plus 6 years old.

So: x+(x+6)=35

2x+6=35

x= years. Brother, are you on the wrong topic? How can there be a decimal point ...

Solution: Let the age of the younger brother be x years old, then the age of the elder brother is (x+6) years old, and the equation is listed according to the meaning of the problem

x+x+6=35

x = A: The younger brother's age is years, and the older brother's age is years.

From 00 to 99, there are 100 2 10 = 20 times, 000 to 399, and the last two digits have 20 4 = 80 times and 100 times in the hundred.

From 400 to 412, there are 401,410,411,412 times for a total of 5 times, so all of them are from 80 + 100 + 5 = 185 times.

Solution: Let's look at 1-99 first

Unit 1, 11, 21, 31....91 total of 10 tens 10, 11, 12....19 of 10 in total.

1-99 miles of 20 in total.

In the same way, 100-199 digits + 20 tens.

The same goes for 300-399.

400 to 412 contains 401, 410, 411, 412, a total of 5, 100-199, 100 numbers, each with a 1

100 in total.

So a total of 20*4+100+5=185.

Talented, that's how homework is done.

Can you make it difficult?

2. A B = 1-1 6 = 5 6, B A = 6 5, B is 1 5 more than A.

3. No, it is 1 4 times less.

4. Cheetah. 5/11,1-6/11=5/11，5/11:1=11:

56. Books with points account for 9 10 of the total, and the sixth grade accounts for 9 10-2 5 = 1 2. 30 (1 2-2 5) = 300, donate 300 * 1 10 = 30 copies.

The time elapsed for Babe to get home = 1200 75 = 16 minutes.

The puppy ran for 16 minutes, and the distance traveled = 16 * kilometers.

When Bei Bei arrived home, the dog had run a total of kilometers.