Who is improving the fastest? Math problems, ask math problems, speed, math good progress

Percentage ( Score for this semester - Score for last semester) Score for this semester.

Naughty: (90-80) 80=

Smile: 100-90) 90=

Spirit: (98-88) 88=

So it's naughty.

Naughty is the fastest progressive

Naughty. 10/80 to 10/88 to 10/90.

Naughty: (90-80) 80=

Smile: 100-90) 90=

Spirit: (98-88) 88=

Naughty progress fast.

Naughty: (90-80) 90

Smile: (100-90) 100 10

Lingling: (98-88) 98

Naughty scores have the largest percentage increase, so Naughty has the fastest progress.

Naughty progresses the fastest because its progress percentage is 10 80*100%=

Larger than the other two.

So naughty progresses the fastest.

Naughty improved (90-80) 80=

Smile improved (100-90) 90=

Spirit progressed (98-88) 88=

So naughty makes the most progress.

Serious and careful, step by step, the stool Wang comes to slap the key, and it is good to be a jujube and a child.

person) two-sevenths x = 360

x=280, then the chair is 280 two-sevenths = 80 yuan.

3.Is it shared, or is it used for pants?

If it is shared, it is (one-half + one-third) x= if it is used separately for pants, it is one-third x=

x=3 x=

Zhang Fan: 1 5 2 3 = 3 10

Li B: 1 8 5 6 = 3 20

Forestry: 1 10 5 12 = 6 25

Zhang Fan is the fastest.

I understand it this way.

Zhang Fan: 1 5 2 3 = 3 10

Li B: 1 8 5 6 = 3 20

Forestry: 1 10 5 12 = 6 25

Zhang Fan is the fastest.

v sheets=;

v Lee=; V Lin = So Zhang Fan is the fastest.

Zhang Fan is the fastest, Lin Xue is second, and Li Yi is the slowest!

The distance divided by the time is equal to the speed.

The oil yield of a soybean is 24% 32%, 200 kg of such soybeans can produce at least (48) kg of oil, if you want to squeeze 96 kg of oil, you need at least (300) kg of soybeans.

A cube of wood has an edge length of 2dm, now cut it into one of the largest cylinders. The area of the cut cylindrical side is ( )dm2, and the volume of the cut cylinder accounts for ( ) of the original cube volume

During the Dragon Boat Festival, my mother made zongzi. It takes 20 minutes to wash rice and wash zongzi leaves, 1 hour and 30 minutes to wrap zongzi, and 50 minutes to cook zongzi. If you want to eat zongzi at 12 noon, your mother will start making them at 9 o'clock (20 o'clock) in the morning at the latest.

The master and apprentice work on one type of part. With the same time, the apprentice can process 3 pieces, and the master can process 5 pieces. If two people work together to process 200 of these parts, the master will process (125) and the apprentice will process (75).

Six and three-quarters = (6) hour (45) minutes.

50/20 ) 701 ) 7) into.

The hundredth digit of a number is the smallest prime, the tenth digit is the smallest composite number, the hundredth digit is the largest single digit, and the rest of the numbers are 0s. This number is written as ( ) and it is written to one decimal place about ( ).

The first problem uses the inverse theorem proof of Menelaus' theorem.

Menelaus theorem reference.

The second problem is the generalization of the butterfly theorem, which can also be proved using analytic geometry.