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22 tháng 2 2022

TL

1 dm3=1000 cm3     1,952 dm3=1952 cm3       3/4 m3=750000 cm3         19,80 m3=19800000 cm3       923,232413 m3=923232413 cm3

nha

HT

22 tháng 2 2022

1 dm3 =.....1000..cm3       1,952 dm3 =..1952....cm3       3/4 m3 =....750000....cm3       19,80 m3 =...19800000.....cm3     923,232413 m3 =....923232416....cm3

HT 

22 tháng 2 2022

TL

1 dm3=1000 cm3     1,952 dm3=1952 cm3       3/4 m3=750000 cm3         19,80 m3=19800000 cm3       923,232413 m3=923232413 cm3

nha

HT

22 tháng 2 2022

TL:

1 dm3 =....1000...cm3       1,952 dm3 =...1952...cm3       3/4 m3 =...750000.....cm3       19,80 m3 =.....19800000...cm3     923,232413 m3 =....923232413....cm3

HT 

In the future, schools will be better. Computers will be much quicker and we might have pencils which write for us! All the students will have their own computers.When there is a history lesson, the computers will show important events. The students will be dressed up as the characters from the period they are studying. There will be hover boards in the playground, and students will come to school by hover cars.Every child will have a robot like themselves. The robots will have to go to school...
Đọc tiếp

In the future, schools will be better. Computers will be much quicker and we might have pencils which write for us! All the students will have their own computers.
When there is a history lesson, the computers will show important events. The students will be dressed up as the characters from the period they are studying. There will be hover boards in the playground, and students will come to school by hover cars.
Every child will have a robot like themselves. The robots will have to go to school while the students sit at home controlling them in front of their computers. The robots will have laser pens and the student will have laser ink pens.
The classroom will be floating, and the tables and chairs will, too. There will be no homework, and teachers won't take away the toys.
1. The student wants all of the following but not .
A. having laser ink pens
B. going to school
C. staying at home controlling a robot
D. having a robot like himself
2. In history lessons, the student wants the computer to .
A. show important people in history events
B. have new games
C. show history events and the student will be one of the important characters
D. find all information about the events from the Internet
3. If the history lesson today is about ancient Egypt, the student will _____________.
A. watch films about Egypt on the computer
B. become the queen
C. get dressed like the queen
D. see things and houses at that time
4. The student wants to have __________________.
A. floating classrooms
B. no homework
C. toys in the classroom
D. all A, B, and C
5. The word "hover" in paragraph 2 means ________________.
A. colourful
B. flying
C. moving
D. large

0
22 tháng 2 2022

Nửa chu vi là :

60 : 2 = 30 ( cm )

Chiều dài của hình hộp chữ nhật đó là :

30 : (2+1)×2= 20 (cm)

Chiều rộng là :

30 -20=10 (cm)

Diện tích hai mặt đáy đó là :

20×10×2=400 ( cm²)

Diện tích xung quanh là :

880-400=480 (cm²)

Chiều cao hình hộp chữ nhật đó là :

480 : 60 = 8 (cm)

       Đáp số : 8 cm

22 tháng 2 2022

(16:4)×100= 400

Số kg nước biển để được 16kg muối là :

16 : 4 x 100 = 400 ( kg )

Đ/s:...

22 tháng 2 2022

TL

20x30x290

=600x290

=174000

nha

HT

20 x 30 x 290 = 174000

HT