( 1)7.3x0.35+073x6.5

=0.73x(3.5+6.5)

=0.73x 10

=7.3

Second, the column comprehensive formula calculation

What is the quotient of (1)29 minus 15.87 divided by 2 times 0.64?

(29- 15.87)÷(2X0.64)

= 13. 13÷0.0 128

= 1025.78 125

Third, solve the problem.

(1) The school organizes the fifth-grade teachers and students to visit the park. If you rent a tour bus that can take 12 people, you only need to rent14; If you rent a cruise ship that can take eight people, how many cruise ships do you need to rent at least?

12X 14÷8=2 1

(2) The price of refrigerator is 2240 yuan, which is more expensive than that of air conditioner in 80 yuan, and the price of TV set is more than three times that of air conditioner, which is more expensive than that of 50 yuan. How much is a TV set?

2240-80=2 160 yuan 2 160X3+50=6530 yuan. A TV set is 6350 yuan.

(3) Xiao Qiao and Xiaoya meet to participate in team activities. They set off from home face to face, and Xiao Xiao set off four minutes later than Xiao Ya. The two met on the road five minutes after the small departure. The distance between their two homes is 1 145 meters. Xiaoya walks 80 meters per minute. How many meters does Xiaoxiao walk every minute?

[1145-(5+4) x80] ÷ 5 = 85m

Xiao Linglong walks 85 meters per minute.

(4) A rectangular fish tank made of glass is 5 decimeters long, 3 decimeters wide, 6 decimeters high and 4.9 decimeters deep. After soaking a rockery in this fish tank, the water depth in the tank is now 5.3 decimeters. What is the volume of this rockery? (Ignoring the thickness of glass)

5X3X(5.3-4.9)=6 cubic decimeters.

The volume of this rockery is 6 cubic decimeters.

fill (up) a vacancy

There are (600) 0.005438+0 in 0.06.

(2) Among the numbers of 0.5, 0.9, 3/ 10 and 3/5, the smallest number is (3/ 10).

(3) When six cubes with a length of 2 cm are spliced into a large cuboid with the smallest surface area, the surface area of the spliced large cuboid is reduced by () square centimeters compared with the sum of the original six cubes.