Can someone help with a 5th grade math problem?

I, I

I, I, I ask, I ask, I ask.

Let's look at the question first, it took 11 minutes to run a kilometer, how many minutes did it take to run a kilometer, the answer to this question is very simple, we need to first calculate the length of a minute run, that is, the speed of kilometers 11 kilometers minutes, and then divide the distance by the speed to get 1 kilometer minutes) So it takes about a minute to run a kilometer.

The above method has many steps, and it is true that you can get the time of 1 kilometer by dividing 11 minutes by kilometers, and you can not be confused in kilometers and 11 minutes to solve this problem, for example, a car ran 10 kilometers in 10 minutes, and directly divided 10 by 10 to calculate the same reason for running 1 kilometer in 1 minute.

In fact, this is a distribution problem, you can think of 11 minutes as 11 apples, and kilometers as individuals, and the question asks how many minutes it takes to walk 1000 meters, which is equivalent to asking how many apples 1 person will get. So just use 11 and you're good to go.

If you can't understand the decimal for the time being, you can use the whole number to look at it first.

For example, it takes 10 minutes to run a 1,000 meter, and 20 minutes to run a 2,000 meter. The time it takes to run a kilometer, you can get with 20 2000.

If it's a decimal, you can also make an analogy.

You spent 100 dollars in ten days, then you spent 10 dollars in one day and 1 dollar in one day. Ten divided by 100 is how many days an average dollar will cost you. Then the same is true for this question.

4x5。Because there are 20 in total, don't solve it one way.

It takes 11 minutes to run a kilometer, and how many minutes does it take to run a kilometer, which is divided by 11.

Kilometers take 11 minutes, and kilometers are kilometers per minute.

Divided by 18 is the number of hours A is behind per hour, plus A per hour, which is the speed of B per hour, you see right.

Let the speed of the B ship be xkm h

18x(x= kilometers per hour.)

(We hope to be able to answer your questions, please continue to ask questions if there is something inappropriate.)

The salesperson miscalculated. Because when using "jiao" as the counting unit of payment, the salesman calculates 10 yuan 1 jiao = 101 jiao, which is an odd number, and the price of 3 pencils is 12 jiao, which is an even number; The price of a ballpoint pen is 28 jiao, which is an even number; The remaining 8 notebooks and 12 erasers are all even, so the price must be even, so the total price of the four stationery should be even (in "corners", not counting "points"), it cannot be 101 corners.

The question is missing a premise: all items ** are accurate to the corner (no fractions), so the salesperson miscalculated.

Yuan) = 61 (corner), which is an odd number, while the sum of 8 notebooks and 12 erasers is an even number.

First of all, the units are unified.

4 jiaoyuan, 2 yuan, 8 jiaoyuan, 10 yuan, 1 jiao.

(Note*: Titled as a distraction error, one less premise is missing - all items** are accurate to the corner.) If there are no prerequisites, the following calculations are correct. ）①=

Yuan) because the amount of money left before the payment is odd and prime, and 8 (this notebook) + 2 (eraser) = 10 (the sum of the two things) is an even number, so the salesperson miscalculated.

m divided by n = 5 (m, n are both non-zero natural numbers), and the greatest common factor of m and n is (n).

m and n are two non-zero natural numbers next to each other, and the greatest common factor of m and n is (1).

Divide a rectangular piece of paper 18 cm long and 12 cm wide into squares of the same size with no leftovers, each small square has a maximum side length of (6) cm, and can be divided into a minimum of (6).

Two steel pipes, A is 36 decimeters long and B is 40 decimeters long, and they are loaded into small sections of the same length with no remainder, each section is the longest (4) decimeter, and the least is cut into (19) sections.

Question 1: 2740mm = 1525mm = 25mm = s surface area =

Question 2 v volume = 8

Question 3 3cm=

v Timber = 36 20

1, sq.m.

2,8* cubic meters.

3, 36 * 20 * cubic meters.

Three years later, he is 24 years older, and now he is 24 years older, so Dad's age is Xiao Ming's age plus 24, Xiao Ming's age plus Dad's age is twice Xiao Ming's age plus 24, Xiao Ming's current age is equal to (34-24) 2=5, and Dad is now 24+5=29

Three years later, my father was 24 years older than Xiao Ming.

I'm 24 years older now, so I know no.

Apply the sum difference formula.

Daddy (34+24) 2 =29

Son (34-24) 2 =5

The age difference between father and son is constant.

This year, Dad is also 24 years older than Xiao Ming.

Dad: (34+24) 2=29 years old.

Xiao Ming: (34-24) 2=5 years old.

Because the two grew up together, three years later, Dad is 24 years older than Xiao Ming, so this year Dad is also 24 years older than Xiao Ming.

Xiao Ming is 5 years old and his father is 29 years old.

Xiao Ming is 5 years old this year, and his father is 29 years old.

You can only use the hypothetical method, this is not an elementary school, is it?