Fill in the blanks.
Numbers 1 and 5837,5 are in the position of (), indicating (); 7 is in the () position, indicating ().
2, 3 thousand, 60, 2 one is ().
3, there is a four-digit, thousands and digits are 5, the rest are 0, this number is ().
4, add up with a pen, which adds up to ten, you must go forward ().
Xiao Mahu took the tenth "5" as "3" when calculating an addition problem, and the result was 784. The correct answer should be ().
Second, the column vertical calculation and checking calculation.
793-486 249+3 18 605-378
600-395 588+468 804-276
Third, test the following questions and correct the mistakes.
1008 709 404 239
— 17 + 32 1 - 186 + 57 1
9 1 1020 3 18 800
Fourth, solve the problem.
1. We collected 135 pieces of waste batteries in Class One, and Class Two collected 69 pieces more than Class One. How many stanzas did Class Two collect?
2. Folk story book 185, fairy tale 2 10, children's novel 335. How many children's novels are more than fairy tales?
3. The fruit shop delivered 4 10 kg, and sold 139 kg in the morning and 183 kg in the afternoon. How many kilograms are left?
There were 552 tourists in the zoo in the morning and 272 people left at noon. In the afternoon, 308 people came again. How many tourists are there in the park? How many tourists come to the park all day?
5. Fill the four numbers 245, 255, 265 and 275 in □ to make the equation hold.
+ - =
6. The Red Family, the Lily Family and the Meimei Family are all on the same road. It is 424 meters from Honghong's home to Mei Mei's home, and 385 meters from Lily's home to Mei Mei's home. How far is it from Honghong's home to Lily's?
two
First, oral calculation.
42+30= 90×6= 590+70= 800×5= 440×0=
25+ 16= 303×3= 12×2= 470+70= 64×0=
20×8= 70×6= 20×6= 90×3= 400×6=
Second, fill in the blanks.
1, the common length units are,,,.
2. Common weight units are,,.
3. Xiaoli's home is 5000 meters away from the park, which is 1000 meters.
4. A bag of rice weighs 200 kg, and a bag of rice weighs 1 ton.
5, 9 km = () meters = 4000 kg = () tons.
60 mm = () cm 80 cm = () decimeter
50 decimeters = () meters 2000 grams = () kilograms.
6 meters = () cm 7 decimeters = () mm
28 mm +52 mm = () mm = () cm
9 cm +3 1 cm = () cm = () decimeter
3m-25m = () DM1400m-400m = () km.
600kg+1400kg = () 3 tons-800kg = () kg
4 decimeters× 5 = () meters 30 meters ÷6= () decimeters.
Third, fill in the appropriate unit name in brackets.
An elephant weighs about 4 (), and a watermelon weighs about 4 ().
Xiaohong's height is 138 () and her weight is 42 ().
This math textbook is about 2 () long and 4 () thick, like a diary.
One lap of the standard stadium runway is 400 (), and the plane flies 800 () per hour.
Xiaoling's home is 1750 () The railway line from Beijing to Guangzhou is about 23 13 ().
4. Judge whether it is true or not (tick in brackets means it is correct, and x means it is wrong).
1 and 1 ton of cotton is lighter than 1 ton of stone. ( )
An elephant weighs 4 kilograms. ( )
This blackboard is 4 meters long. ( )
The thickness of a coin is about 2mm. ( )
A pencil is about 2 cents long. ( )
Verb (abbreviation of verb) is filled with ">" in ○. "