1, 13.5×0.5 means ().

2, 13.5÷0.5 means ().

3. The area formula of parallelogram expressed by letters is ().

4. Calculate 0.756÷0. 18. First, expand the dividend and divisor by the same multiple at the same time, and then convert the divisor into an integer, and then calculate.

5. Fill in >, "

1.6.74× 1.00 1○6.74

2.4.568÷0.04○4.567

3.9.68×0.99○9.68

4.4.82÷0.08○4.82

6.5.7÷ 1. 1 1○5.7

Verb (abbreviation of verb) calculation problem

1. Calculate the following problems, which can be simplified (8 points).

( 1)(6.8-5.4)×2.75-0.9

(2)8÷[(40.75-9.5)×0.4]-0.64

(3) 1.24×8.3+8.3× 1.76(4)4. 1 1-0.72×(3.38-2. 13)

2. Find the unknown x(4 points)

( 1)x×2.34 = 4.9 14(2)x÷0.05 = 3.528

Six, column calculation (12 points)

1. 1.98 and 5.4, divided by 0.08 1, what is the quotient?

What is the product of the sum of 2.5.6 and 0.7 times their difference?

What is the quotient of the product of 3.3.8 and 4.5 minus 7.5 divided by 5?

4.20 Subtract the sum of 1 1.2 and 2.6, and divide the difference by 49.6. What is the quotient?

7. Application questions (24 points) 2. A passenger ship sails from port A to port B,

1. A construction site needs 50 tons of sand. The planned speed of a car is 25 kilometers per hour. 12.

The car with a load of 0.5 tons has been transported five times and can arrive on time. Because it was smooth sailing,

The rest is replaced by a car with a load of 2.5 tons, and the actual speed is 5 kilometers per hour. As a result,

How many times will the car come? How many hours does it take to arrive?

The distance between a and b is 5 kilometers. There are two trains. The railway between these two cities is 256 meters long.

The train leaves from two places at the same time and goes back, kilometers. Leave two cars from Party A and Party B at the same time.

Passenger cars travel 50 kilometers per hour, and trucks travel in the opposite direction in every city, which takes 4 hours.

The hour line is 48 kilometers. After 2.5 hours, we will meet. The speed of a car is 3 1 10,000 per hour.

How many kilometers are the two cars apart? How many kilometers do the meter and B bus travel per hour?