2. A pig needs to eat 30 kilograms of feed in the wheat field, and each bag of feed is 100 kilograms. How many days can a generation of feed eat? How many kilograms are left?

3. Spring Bud Airport 1 eggs received160kg,18kg are packed in a box every week. How many cases can be packed and how many kilograms are left?

Grandpa said, "I take this medicine 12 tablets a day." A bottle of medicine *** 100 tablets, enough for a few days, how many tablets are left?

5. There are 16 white cranes and 176 white swans wintering in a lake area in China this year. How many times are there white swans?

6. Uncle Liu took 700 yuan to buy fertilizer, bought 16 bags of fertilizer, and left 60 yuan. What's the price of each bag of fertilizer?

Three people eat three tomatoes at the same time and finish them in three minutes. How many minutes does it take six people to eat a tomato at the same time?

Solution: It takes six people half a minute to eat a tomato at the same time.

2. Find the pattern and fill in the number: 2.1.4.3.6.9.8.27.10. (8 1) ( 12)

3. Fill in the appropriate numbers in brackets according to the arrangement of the numbers in each column below.

( 8 ), 13 , 18,23,( 28 )33

There are 5 1 students in a class, and the number of boys is twice that of girls. How many girls and boys are there?

Solution: 51%(2%1) = 51%3 =17 (person) 17*2=34 (person).

A: Girls 17, boys 34.

5. A number plus 2, minus 3, multiplied by 4 and divided by 5 equals 12. What's this number?

Solution:12 * 5 = 60 60% 4 =1515+3 =1818-2 =16.

A: This number is 16.

Fill in the blanks.

(1)3 liters = () ml 6000 ml = () liters 5 liters = () ml.

(2) Fill in liters or milliliters in brackets.

A bottle of milk 240 (), a bucket of soybean oil 5 (), and flower bath water 20 ().

(3) The label of a beverage bottle is printed with "net content of 250ml", and the capacity of this beverage bottle is ().

(4) The operation order of 37 1+29×4÷2 is changed to sum first and then quadrature.

Finally, the original formula was changed to _ _ _ _ _ _ _.

(5) The sum of the upper bottom and the lower bottom of the right trapezoid is () cm.

Height () cm.

(6) There are four sticks with long bottoms of 20cm, 10cm, 10cm and 8cm respectively, and three of them are selected to form a triangle, which is a triangle with a circumference of () cm.

(7) A triangle with three angles of 60 degrees is both a triangle and a triangle.

(8) One acute angle of a right triangle is 45, and its other acute angle is (). Is this a right triangle or a triangle?

(9) An isosceles triangle, if its base angle is 35, its vertex angle is (); If its top angle is 100, one of its bottom angles is ().

(10) As shown on the right, if the five-pointed star is matched with a triangle.

Together, a collocation method of * * * with ().

(1 1) As shown in the picture on the right, three people are shot continuously, and one * * * has ().

Different arrangements; If you choose two people at a time from these three people to line up together.

Photos, a * * * has () different arrangements.

(12) Four students play table tennis, one for each other.

A * * * can play () games.

Second, operation.

(13) Draw the height of each figure below.

My hands are numb-can it be the best? . . If you still want to ask, oh, oh, oh.