First, think about it and fill in (20 points)

(1) is a number, and the two numbers after 3998 are () and ().

A number consists of five thousand, nine hundred, two tens and four ones. This number is ().

An egg weighs about 50 () and a watermelon weighs about 4 ().

(4) fill in ">"

763 9673 10 1 1 9675438+0 10 1.5kg○5000g 3999○400 1

(5) Fill in the appropriate number in ().

5× ( ) = 40 70 - ( ) = 32 ( )+ 24= 54 56 ÷ ( ) =8

(6) bright primary school * * students 1986, about (); There are 9980 books in the school library, which is about ().

(7) There are 30 biscuits in a bag, and 5 biscuits can be taken out of the bag at a time. () You can take them all at once.

(8) There are seven days in a week, surrounded by () days, and 56 days are () weeks.

(9) Fill in the numbers according to the rules: 2, 4, 7, 1 1, 16, (), ().

(10) Among the four digits consisting of 9, 8, 0 and 0, there are () and () that are not read at all.

The number that reads only one zero is ().

Second, distinguish the choice (put the serial number of the correct answer in brackets) (8 points)

(1) What are nine sixes? The correct formula is ().

① 6×9 = ②6+9 = ③9 -6 =

② Six thousand nine hundred writing ().

① 609 ②6009 ③ 6090

(3) In the figure below, () is an obtuse angle.

① ② ③

(4) The formula "785 16" cannot be used for the following calculation.

① 56÷7 ② 8×7 ③7+8

(5) Among the following phenomena, () is rotation.

① Sliding slide ② Windmill rotation ③ Drawer type

(6) The largest four digits are ().

① 1999 ②9000 ③9999

(7) Comparison between 1kg cotton and1kg iron. ( )

① Iron weight ② Cotton weight ③ Same weight.

(8) A duck with two chickens weighs 8kg, a duck weighs 4kg, and each chicken weighs () kg on average.

①2 ②4 ③8

Three, see clearly and accurately (32 points)

(1) Numbers are written directly. (20 points)

7×8= 54÷9= 45+5= 170-90 = 35 ÷5×3 =

18÷3 = 36+27= 42÷7= 630+200= 9×7-54 =

5×6= 86-24 = 36÷9= 160+40= 4×9÷6 =

28÷4= 52+35= 72÷8= 380-300 = 72÷9÷2 =

(2) Use vertical calculation.

640-250 = 730-460 = 320+290 = 900-580 =

Iv. Draw a picture and fill it in (15)

(1) Where have they all moved? Draw a picture

(2) The following is a statistical chart of books donated by students from grade one to grade six in bright primary school to children in Sichuan disaster area.

① Complete the following statistics.

grade

Grade?One

Grade?Two

Grade?Three

Grade?Four

Grade five, grade six

Number of data packets

② Grade () donated the most books, while grade () donated the least.

③ The number of books donated by the sixth grade is () times that of the first grade.

Please ask a math question and answer it.

Five, solve the problem (25 points)

1. How many peaches can each monkey eat on average? (4 points)

2. Four mice eat 12 fast bread. How many slices of bread did the seven mice eat? (4 points)

There are 42 tablets in a bottle of medicine. Uncle, take two tablets three times a day. How many days will this bottle of medicine last? (4 points)

Aunt bought 8 bunches of flowers, each with 9 flowers, and left 23 flowers after giving them to her uncle. How much does uncle want? (4 points)