The product of 1, 1. 1×3.6, with one decimal place reserved, is about ().

2. It is known that the product of two factors is 0.24, one of which is 0.3 and the other is ().

3 When calculating division, the dividend is enlarged by 100 times, and the divisor is also enlarged by 100 times. Their quotient ().

4. The product of1× 2.85 has () decimal places.

5. If the multiplier is less than 1, the product is (); If the divisor is less than 1, the quotient is ().

Second, the column vertical calculation

0.03÷0. 12= 79.5÷3= 104.78÷26=

3.08×0.43 13.5×26.7 48×0.35

Third, off-type calculation.

6.33× 10 1-6.33 1.6×55.4-55.4×0.6 17.68÷5.2+2.7× 1.5

35.6-5× 1.73 ( 1. 1-0.78)×(2.7- 1.95)

Fourth, column calculation.

1. Multiply the sum of 14.8 1 and 5. 19 by their difference. What is the product?

2. What is the product of the sum of126.8 and 15.7 multiplied by 1.02?

Verb (abbreviation of verb) application problem: 1. A factory saves 16.084 tons of coal a year, and how many tons of coal are saved on average every month? (Figures shall be kept to two decimal places)

Mom needs to put 2.5 kilograms of milk powder into glass bottles, and each glass bottle can hold up to 0.3 kilograms. How many bottles do you need to prepare?

3. A train runs 2.6 hours 140.4 kilometers, and this train runs 259.2 kilometers. How many hours will it take?

Four machine tools can produce 720 parts in 4.5 hours. According to this calculation, how many parts can four machine tools 1 hour produce?