2. Both the unit and the decimal digits are 0, the hundredth digit is 7, and this number is (), which consists of () decimal digits.
3, 702 writing (); 380 is pronounced as ()
The sum of the two digits of 4 and the smallest three digits is (), and the difference is ().
5. Write down the following figures.
6, 2 decimeters = () mm 40 mm = () cm
30 decimeters = () meters 700 centimeters = () decimeters
7. If ☆8 = 6...△, △ is (), then ☆ is ().
8. Fill in the figures according to the law.
⑴ 378,383,388,393,( ),( )。
⑵ 909,8 18,727,636,( ),( )。
9. A box of biscuits is 50 pieces, which are distributed to 6 children on average. Each child can get at most () pieces, and there are () pieces left; If each child wants to get 9 pieces, there is still () pieces left.
10、
1 1. Fill in the appropriate company name in brackets.
The Chinese book is about 2 () long and the podium is 10 () high.
A piece of rubber is 8 () thick and an elephant is 2 () high.
12. Fill in ""or "=".
30+200 200+300 2 decimeter 10 cm
709 699 300 mm 3 cm
Second, do math. X kb 1。 com
1, write directly.
32 ÷ 8= 220-20= 550+ 100= 600+400=
60+200= 970-900= 5×9= 6 1÷9=
It is estimated that there are several hundred people.
392+405≈ 998-489≈ 789-509≈ 3 12+502≈
3. Vertical calculation with checking calculation.
5 × 7= 45 ÷ 8= 24 ÷ 4= 34 ÷ 5=
3 9 352+ 197+209= 458+248=
5 7 8
7 12-289= 68+372= 820-366=
Third, tick the answer you think is appropriate.
1.2.
3.4.
Fourth, do it.
1, measure the length of each side of the square and fill in ().
What did you find when you measured it?
My findings are:
No.2, No.9 and 18 all leave from the railway station.
(1) The water park is on the () side of the park and on the () side of Xingjiang Building.
(2) The route of Bus No.9 is: from the railway station, walk 2 stops to Xingjiang Building, then walk to Crescent Square, and then walk to Children's Palace.
(3) 18 bus goes from () to (), passes by () station, and takes () station.
Fifth, solve the problem.
1.(1) How much is 60 smaller than 250? (2) How much is 90 more than 880?
2.
() ⊙ () = () (pieces) ... () (pieces)
() ⊙ () = () (Disk) ... () (Piece)
There are 45 boxes of chalk in the school, which are distributed to 8 classes on average. How many boxes are left in each class?
Xiaoming brought 2 yuan money to buy 30 pencils. How many pencils can Xiaoming buy at most?
5.
6.
7.
Bicycle recorder, electric fan and hair dryer
2 14 yuan 398 yuan 309 yuan 186 yuan
(1) ① How much does it cost to buy a racing car and an electric fan?
(2) Aunt Li bought a walkman and a hair dryer. Is it enough to bring 500?
8. Fairy Tales of China has 432 pages. Linlin read 122 in the morning and 89 in the afternoon.
How many pages does Linlin read a day?
(2) How many pages does Linlin need to read to finish this book?
9.
What is the height of this pine tree?
(2) How tall are the willows?