Uncle Li takes a walk elementary school math problems .

1.(200 + 202 + 198) 3 75 = 15000 (cm) = 150 (m).

2.150 3 15 = 30 (m).

3.5 8-5 1 = 35 (square meters).

20 20 = 400 (square centimeters) = square meters).

35 pieces) hope it works.

This yard has (200*75*+202*75+198*75) 3 100=150m in a week

Uncle Li walks about (200*75*+202*75+198*75) 100 15=30m per minute

He had to buy (5*8-5*1) (floor tiles.

This yard is one week (200*75*+202*75+198*75) 3 100=150 meters.

Uncle Li walks about 150*3 15=30 meters per minute.

He had to buy (5*8-5*1) (floor tiles.

Uncle Lee harvested 1088 kilograms.

The answer is a thousand kilograms, if you are deliberately trying to fool people, then there is something wrong with the language of your question.

Uncle Zhang has 6 more potted flowers than Uncle LeeJust assume that Uncle Zhang has 22 pots, Uncle Li doesn't, and give Uncle Li eight pots.

Uncle Zhang 22-8 = 14 pots.

Uncle Lee 8 pots.

At this time, Uncle Zhang had 14-8=6 pots more than Uncle Lee.

Subtraction formula. 1. Minus - minus = difference.

2. Difference + subtraction = subtraction.

3. Minus - difference = minus.

Subtraction-related properties.

1. Anti-exchange rate: subtraction is anti-commutative, if a and b are any two numbers, then (a-b) = -(b-a).

2. Anti-associative law: Subtraction is anti-associative, when trying to redefine subtraction, then a-b-c=a-(b+c).

Uncle Zhang originally had 22 more pots of flowers than Uncle Li, and Uncle Zhang gave Uncle Li 8 pots of flowers, at this time Uncle Zhang's flowers were 8 pots less, that is, 22-8=14 pots, if Uncle Li did not increase the flowers, then Uncle Zhang would have 14 pots more than Uncle Li. But Uncle Li gave Uncle Zhang more than 8 pots of flowers, in fact, Uncle Zhang only had 14-8=6 pots more than Uncle Li. Therefore, now Uncle Zhang has 6 more potted flowers than Uncle Lee.

Set a package of fertilizer x yuan for a total of y yuan.

y-5x=y-8x=-110

x=y=350

350-6* Hope!

He brought x yuan, y yuan per pack.

Then 5y= 1

8y=x+110 2

From 1 to x= 3

Substituting 3 into 2 gives 8y=

3y=y=x=350

He brought 350 yuan per pack.

6 times 350 minus 345 = 5 yuan.

A: $5 more.

You may not understand how to solve the equation, and you may not do it again in the future.

Now it is the money to buy a pack * 5 + yuan = the money to buy a pack * 8-110 yuan, so that you can know the difference between the money to buy five packs and the money to buy eight packs (, yes, you know that the money of 8-5 = 3 packs is yuan. Yuan per pack.

700 divided by (20 + 15) doula is equal to 20 20 minutes after the first encounter.

1400 divided by (20 + 15) equals the second sell handicap meeting after 40 minutes in the sales bureau.

After 20 minutes of encounter.

It took 7 minutes to walk from the 1st tree to the 15th tree, 14 tree stalls.

It means that there are two tree stalls in 1 minute. The first tree to the fifth tree is 4 tree stalls, and the time is 2 minutes, that is, Uncle Li walks forward from the first tree to the first tree, and the total time is 32 minutes. That is, the one-way journey takes 16 minutes, 1 minute to walk two tree stalls, 16 minutes to walk a total of 32 tree stalls, 32 tree stalls should be to the 33rd tree.

When you reach the 33rd tree, you start walking back.

According to the title, the distance of each tree is 7 (15-1) = minutes).

Going back to the 5th tree is missing the distance of 4 trees. i.e. minutes) because it was shared for 30 minutes, so.

30+2) 2=16 (minutes) 16 trees).

Walk to the 33 trees and go back.

Walking 15 trees is equivalent to walking 14 spacing. It takes 7 minutes, then it takes 0.5 minutes to walk an interval, from 15 trees to the fifth tree, there are 11 trees, 10 spacing, it takes 10 * 0·5 = 5 minutes to walk, 30 minutes to share, minus the first 7 minutes, minus 5 minutes to turn back, 30-7-5 = 18 minutes, 18 minutes to go forward and return to the 15th tree, unilateral time is 9 minutes, 9 minutes to walk 18 intervals, except for the 15th tree, 18 trees have been walked. 15 trees at the beginning + 18 trees at the back = 33, so when you walk to the 33rd tree, go back

You're blind, it's a lamppost, not a tree!