Math problems, speed, you are cute! You can choose to answer, try to answer as many as you can

1.The side length of the small cube is 1, then the smallest cube side length is 2, and the volume after the spelling is 2*2*2=8, so 8 are needed.

2.The side length is 26 * 8 13 = 16, 26 * 5 23 = 10, and the area is 160

4.Let B save x, then A is 3x 3x-240=x-40, x=100, so A and B are respectively

5.The cuboid has a total of 12 edges, so the sum of length, width and height is 44 4 = 11, then the length, width and height are , and the volume is 5*3*3=45

6.The volume is 1 3*, 7If the total score is x, then x+97=90y, x+73=87y, and the two are subtracted to give 3y=24, y=8

8.A completes 1 12 per day, and the two of them complete 1 12 + 1 15 = 3 20 per day, then it takes 20 3 = days.

9.If the girl x is the girl, then the boy is 2*(x-10), and after the boy walks 9, the number of people is 2(x-10)-9

x-10）=5【2（x-10）-9】，x=15

Woo, so much, hey, just answer a few questions...

1.To put together a cube, you need at least 8 cubes of the same size.

2.The circumference of a rectangle is 52 cm, the ratio of length to width is 8:5, and the area of this rectangle is 16x10=160 (cm2).

5.The sum of the edges and lengths of a cuboid is 44 centimeters, the ratio of length, width to height is 5:3:3, and its volume is 45 cubic centimeters.

1.1 (the same size) 8 (large cubes).

3.3 out of 5

4.A 300 B 100

Piece. Cm. 3 out of 3. 4.A deposits $300 and B deposits $100. Cubic centimetre. Rice. 20 days.

26 * 5 + 8/8 = 16 cm 26 * 8 + 5/5 = 10 cm 16 * 10 = 160 square centimeters.

Centimeters 11 * 5 + 3 + 5 thirds = 5 cm 11 * 5 + 3 + 3 thirds = 3 cm 11 * 5 + 3 + 3 thirds = 3 cm 5 * 3 * 3 = 45 cubic centimeters.

1 8 (1 if the cube is counted directly).

1.What is the most cost-effective, the average cheapest sugar bought is the most cost-effective, Xiao Ming bought 3 catties in the first month, spending 3 yuan; In the second month, I bought 3 catties and spent 3 yuan. The average is 6 (RMB.

Xiaohua bought 3 catties in the first month and spent 3* yuan; In the second month, I bought 3 catties and spent 3 yuan. The average ** is (yuan.)

So Xiao Ming is the most cost-effective.

3Drawing a diagram can be known, it should be the sum of the three sector areas, s=300 360*2* *8*8+2*120 360*2* *2*2=

4.Let the speed per minute be v, 21=10*v2+10vv=km/min.