Primary 5 Math Thinking Questions, Primary 5 Math Thinking Questions

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Analysis: This trapezoid can be seen as two isosceles right triangles + a rectangle.

So one side of the rectangle is long.

Since the right-angled sides of the two isosceles right-angled triangles are equal, the right-angled sides = (so the other side of the rectangle is.

So the area of this trapezoid = 2 * square meters.

Because the subtraction plus difference is equal to the subtracted number.

So 674 = 2 subtracted.

So the subtraction = 674 divided by 2 = 337

And let the difference be x, so there is 3x+17=337

So x=160

So the difference is 160

So the subtraction is 160 times 3 + 17 = 497

647÷2=337 3＋1=4 337－17=320 320÷4=80 80×3=240

240 17=257 Answer: The minus is 257

Because the subtraction plus difference is equal to the subtracted number. So 674 is equal to the minus plus the difference plus the subtracted, and 674 divided by 2 is equal to the subtracted or minus plus the difference. The minus plus difference is equal to 337, and the minus is more than 3 times the difference17.

Subtract 17 from and divide by 4 to find the difference, and multiply the difference by 3 and add 17 to find the subtraction.

Solution: Let the difference be x, then the subtraction is 3x+17

3x+17+x+3x+17+x=674 8x=640 x=80 3*80+17=257 Answer: ......

Minus = minus + difference Minus = 337 Difference = (337-17) 4 = 80 Minus = 3*80 + 17 = 257

Assuming that the difference is x, the subtraction is 3x+17, and the subtraction is 3x+17+x=4x+174x+17+3x+17+x=674

8x+34=674

8x=640

x = 80 minus: 80 3 + 17 = 257

Let the subtracted be a and the subtraction be b

a+b+(a-b)=674 gives a=337

3(a-b)+17=b, i.e., 1011+17=4b, resulting in b=257

The area of the triangle that is divided into sections.

Let the length of the right-angled edge be x, then x*x 2=

x*x=set the length of the line segment to y

y*y=y=5

Because more than 3 kilometers add 1 yuan per kilometer.

So 18-3=15 (km).

15 1 = 15 (yuan).

A total of 9+15=24 (yuan) will be paid

Because the car was 9 kilometers away, I took my friend into the car again.

When the car reached 12 kilometers, I met my friend Chen Jie again.

So Liu Wen sat 9 kilometers, Chen Jie sat 6 kilometers, and Wang Gang sat 18 kilometers.

So Liu Wen should pay 1 9 = 9 (yuan) Chen Jie should pay 6 1 = 6 (yuan) Let Wang Gang pay for the rest.

This foreigner calls the Chinese residual theorem, and the Chinese call Sun Tzu's theorem If you give one more person, it will be too peaceful and can be divided equally.

So 5*9*2-1=89

At least 89 people.

If the question is 150 to 200 people, then give it another 90 people, so 89 + 90 = 179

Dongbei University of Finance and Economics Financial Management Graduate Examination Subjects.

When the water is seen as square from the side, the side length = 4dm, 4dm, 4dm, and the volume = 4x4x5 = 80 cubic decimeters.

When the water is seen as square from the front, the side length = 5dm, 4dm, 5dm, and the volume = 5x4x5 = 100 cubic decimeters.

When viewed from the side, the volume of water in the tank is: 4x4x5=80(dm) 3

When viewed from the front, the volume of water in the tank is: 5x5x4=100(dm) 3

It can only be seen from a wide surface, and the water surface is 4 cm high.

The volume is 5 4 4 80

Hello, I'm here to answer for you.

1+2 times 3+4) times 5+ (6 times 7+8) times 9

I'm in the fifth grade, so what's the point?