Current location - Training Enrollment Network - Mathematics courses - Go! Grab points in mathematics in the sixth grade of primary school!
Go! Grab points in mathematics in the sixth grade of primary school!
(1) Xiao Wang could have got: 300*0.04= 12 yuan moved all the glasses.

But he broke five cups and moved 295 cups, and got 295*0.04= 1 1.8 yuan.

Only 1 1 yuan angle is obtained, and11.8-1.2 = 0.6 yuan is deducted.

Therefore, 0.6/5=0. 12 yuan = 1.2 points will be deducted for each broken cup.

If the problem is solved by an equation, it is assumed that x yuan will be lost once it is broken.

(300-5)* 0.04- 1 1.2 = 5x

x=0. 12

(2) If Xiao Ming answers question X correctly, Xiao Ming answers question (20-x) incorrectly.

Xiaoming's total score is 5x-2(20-x)=7x-40.

According to the meaning of the question, Xiao Sheng scored 7x-40+2 1=7x- 19.

The other two total scores are 15 1.

So 7x-40+7x-19 =151.

Solution, x= 15

So Xiao Ming got it right 15.

Xiao Sheng's score is 7* 15- 19=86.

Assuming that Xiao Sheng answered the Y question correctly, then

5y-2(20-y)=86

y= 18

In other words, Xiao Sheng correctly answered the question 18.