3 simple 6th grade math problems, primary math 6th grade problems 3 simple questions .

1.The school buys three kinds of balls, of which basketball accounts for 1/3 of the total, the ratio of the number of soccer balls to the other two kinds of balls is 1:5, and there are 15 volleyballs, how many of the three kinds of balls are purchased?

Football accounts for the total.

Volleyball accounts for the total.

Purchased three kinds of balls in total.

15 1 2 30 pcs.

2.A store transports a batch of towels to the countryside, if you take 3/8 of this batch of goods to pack, you can pack 3 boxes and 72 more, if you take 1/2 of the boxes, exactly 5 boxes, how many towels are in this batch of towels?

The total number of each box.

3 boxes can be filled with a total number.

72 accounted for the total.

This batch of towels altogether.

72 3 40 960.

3.A piece of cloth, 6 pieces of the same clothing are still 1/10 left, if you make 7 pieces, there are still meters, how many meters is this cloth?

6 pieces with the total number.

Each piece is used in total.

For 7 pieces. meters accounted for the total.

This cloth has. Rice.

[1-(1 3)-1 (1+5)] = 30 ......Total.

30 (1 3) = 10 ......Basketball.

30-15-10 = 5 ......Football.

2.If you take 1/2 of the packing, exactly 5 boxes, if the full load, it is 5 * 2 = 10 boxes, if you take 3/8 of the goods to pack, you can pack 3 boxes and 72 more, if the whole pack, it is 3 (3 8) = 8 boxes + 72 (3 8) = 192.

So, 10-8 = 192 in 2 boxes, 192 in each 2 = 96 pieces.

How many towels are in this batch?

96 * 10 = 960 records.

Fabric required for a garment: (1-1 10) 6=3 20 m).

This cloth has 6 meters.

1.The ratio of the number of soccer balls to the other two types of balls is 1:5, so the ratio of the number of soccer balls to the other three types of balls is 1:6

15 (1 3 + 1 6) = 30 (pcs).

A total of 30 of the three types of balls were purchased.

2.Total: 5 (1 2) = 10 (boxes).

10*3 8=15 4 (box).

15 4-3 = 3 4 (box).

One box: 72 (3 4) = 96 (sticks).

96 * 10 = 960 records.

There were a total of 960 towels in this batch.

3.Fabric required for a garment: (1-1 10) 6=3 20 m).

This cloth has 6 meters.

100% correct!!

1. A total of 30. Set up x for a total of 6x, 2x for basketball, and 3x for volleyball. x = 52, set a total of y, x per box.

3/8y=3x+72

1/2y=5x

The solution is y=480

3. Set Y meters, one piece with X meters.

y=6x+1/10y

y+de x=y=6

1. There are 15 volleyballs, and the ratio of football is 1:5, so football is 3, basketball accounts for 1 3, and the total number is x, 1 3x+3+15=x 18=x-1 3x 18=2 3x x=27

Because the total number is 27, the basketball is 9.

1 Basketball x Soccer y Volleyball Z

x=(x+y+z) 3 gives 2x+y+z=0y=(x+z) 5 gets 5x-y+5z=0

z=15, I don't understand, don't tell me you won't.

1.Let the number of basketballs be x, the soccer ball is y, the volleyball z, the total number a, can be listed x=1 3a, y: (x+z)=1 5, z=15, x+y+z=a

It can be solved with x=10, y=5, z=15, and a total of 302The equation is also solved, with x towels, a box of y strips, 3 8x=3y+72, 1 2x=5yThere are 960 solutions.

3.There are x meters, one piece with y meters, x =, x =, can get x = 6 meters.

（1）.The radius of the flower bed is.

8 2 4 meters.

The outer radius of the path is.

4 1 5 meters.

The area of the trail is:

5 5 sqm.

2）.The distance covered by the tip of the minute needle in 5 laps is.

Centimeters go three-quarters of a circle is.

3/3 = centimeters.

1. The radius of the periphery of the path is: 8 2 + 1 = 5 (meters) The perimeter of the perimeter of the path is: 2 * 5 = 10 (square meters) = square meters 2, walk 5 circles:

2 * 12 * 5 = 120 (centimeters) = centimeters.

Walk 3 4 laps: 2 * 12 * 3 4 = 18 (cm) = cm.

3. The area is: 3 = 9 (square meters) = square meters 4. The radius of this stump is: 2 = 36 (cm) The cross-sectional area of this stump is: 36 = 1296 (square centimeters) = square centimeters.

1.The side area is square meters, the height is 6 meters, and the surface area and the diameter and radius of the bottom surface are found.

Side area = radius 6 = square meters.

Radius = meters. Diameter = 2 meters.

Surface area = 2 square meters.

2.The side area is square meters, the circumference of the bottom surface is meters, and the surface area and the radius and diameter of the bottom surface are found.

Bottom circumference = radius = meters.

Radius = meters. Diameter = 4 meters.

Surface area = square meters.

3.The side area is square meters, the diameter of the bottom surface is 5 meters, and the circumference and height of the bottom surface are found.

Base circumference = m height = m.

1.The base circumference is.

The radius of the bottom surface is 1m and the diameter is 2m

The surface area is.

1.Proportional, y x = two-fifths (certain) ratio (quotient) certain, proportional relationship.

2。Proportional x y=7 5 (certain) ratio (quotient) certain, proportional relationship.

3。Proportional x y=7*6 (certain) ratio (quotient) certain, proportional relationship.