Elementary school 2nd grade math, I can t do it, ask for help

Each serving is different, then at least 1+2+3+...9 45 is greater than 35 so it must be **.

35 at 9 equals 5

The basis of each pile is 5

Then one pile is minus one, and the other pile is added by one

There must be two piles that are the same amount...

If you press: 1+2+3....9 is counted, and 35 cannot be added

One is that the old man may have encountered such a ** himself, just experience!

The second is: a simple calculation can be known, and there is a possibility that can be assumed, and the method is simple! It's addition:

Let's say each disc is different.

1+2+3+4+5+6+7+8=9x4+=36 only used 8 disks to overdo it, how can you still use the ninth disk???

Obviously impossible!

To make each team different, it must be 1+2+3+**9=35. You can try it when you have time.

Each serving is different, then at least 1+2+3+...9 45 is greater than 35 at least two piles are the same quantity. So it must be **.

No way. If there is at least a pile of 0.

Up to a pile of 4+3=7.

0--7 has only 8 numbers, and the ninth number must be 7

But 7 repeated.

So it can't be.

At least two piles are of the same amount. You can give it a try.

We know that what they are asking for is the same as the dividend. Eh, we know the remainder is two. So it's very simple, it's 5 7 and then add two and you're good to go. 35 + 2 = 37, 37 divided by seven equals five surplus 2, 37 divided by 5 = 7 surplus 2.

The first type: buy three consecutive tickets in Area A for a total of 1080 yuan;

The second type: buy three consecutive tickets in Area B for a total of 720 yuan;

The third type: buy three consecutive tickets in Area C for a total of 360 yuan;

Fourth: buy one ticket in Area A and buy two tickets in Area B for a total of 840 yuan;

Fifth: buy two tickets in Area A and buy a ticket in Area B for a total of 960 yuan;

Sixth: buy two tickets in Area B and one ticket in Area C for a total of 600 yuan;

Seventh: buy one ticket in Area B and buy two tickets in Area C for a total of 480 yuan;

Goodbye, landlord.

Suddenly it rained, the football match was cancelled, please go home and rest, if the weather improves in a few days, you can take a long ticket to watch the game, or you can refund the ticket. (So you refund the ticket, don't explain.) (*Hee-hee.......)）

360x3=1800 (yuan) 240x3=620 (yuan) 120x3=360 (yuan).

A: You can buy all the tickets for Zone A, you can buy all the tickets for Zone B, and you can buy all the tickets for Zone C. There are 3 purchase plans. They are 1,800 yuan, 620 yuan and 360 yuan.

Use the tree diagram to draw all the schemes, and then find **.

1 There are 91 mangoes, peaches, and papayas, and it is known that the number of peaches is 5 times that of mangoes, and the number of papayas is 7 times that of mangoes. How many mangoes, peaches, and papayas are there?

Mango: 1x7=7 (pcs).

Peaches: 5x7=35 (pcs).

Papaya: 7x7=49 (pcs).

2 This year, the big turtle is twice as old as the young turtle; 20 years ago, the big turtle was 3 times the age of the young turtle; Thirty years ago, the big turtle was 5 times the age of the young turtle. Q: How old are the big turtles and the baby turtles?

20 (5-3) = 10 (years).

Baby turtle: 10x4 = 40 (years).

large tortoise; 40x2=80 (years).

3 The kindergarten aunt gave chocolates to the children, each of them 4 pieces, and the remaining 3 pieces, each person was given 5 pieces, and there was a shortage of 4 pieces. Please do the math, how many children are there? How many chocolates are there?

Number of people: (3+4) (5-4)=7 (people).

Number of chocolates: 4x7+3=31 (pieces).

4 And there was a bell, and it struck six times at six o'clock. If it takes 10 seconds to knock 6 times, think about it, how many seconds does it take to knock 10 times?

Knock 6 times, there are 5 intervals, each interval: 10 5 = 2 (seconds).

Knock 10 times, 9 intervals: used: 9x2=18 (seconds).

5 A bicycle has 2 wheels, a tricycle has 3 wheels, there are 9 bicycles and tricycles in the carport, Xiaowen counted, there are 24 wheels, do you know how many bicycles there are, how many tricycles there are?

Suppose each car removes 2 wheels, then 2x9=18 wheels are removed, and 24-18=6 (pcs) is left for the tricycle, each tricycle has 1 wheel left, 6 wheels have 6 tricycles, and bicycles have: 9-6=3 (units).

6 How long does it take for a snail to climb a 25 cm long bamboo pole, 3 minutes for every 5 cm climbed, and 1 minute for rest, how long does it take for it to climb from the bottom of the bamboo pole to the top?

3x5 = 15 (min).

1x4=4 (min).

15 + 4 = 19 (points).

Intelligence questions, IQ test. How many squares are there?

16 + 9 + 4 + 5 + 5 + 1 = 40 (pcs).

Quiz everyone: This is a math problem that can measure whether a person has business acumen. Master Wang is selling fish, a pound of fish at a price of 45 yuan, now a big sale at a loss, the customer bought a kilogram for 35 yuan, gave Master Wang 100 yuan fake money, Master Wang has no change, so he asked a neighbor for 100 yuan.

Afterwards, the neighbor found out that the money was fake in the process of depositing money, and it was confiscated by the bank, and Master Wang lost 100 yuan to the neighbor, how much did Master Wang lose in total?

Note: The difference between catties and kilograms.

A total loss of 100 + (45 2-35) = 100 + 55 = 155 yuan.