Chơi cái trò này à?Ăn gian!

Gọi  số đó là: abc 

ta có: a=4c mà a<10 nen c<3 vậy c=1,2

và a+b+c=3b => a+c=2b

Nếu c=1 => a=4 => b=5/2 (loại)

Nếu c=2 => a=8 => b=5

số đó là: 852

gấp lên 16 lần nha 

4 x 4 = 16 ( lần )

  Đáp số : 16 lần

a)  Chiều cao của hình hộp chữ nhật là :                  300 : (5*4) =15 (dm)

b)  Diện tích toàn phần của hình hộp chữ nhật là :                     300 + 5*5*2 =350 (dm2)

                                                                                     Đ/S : a) 15 dm

                                                                                              b) 350 dm2

TÔI ĐANG NGHĨ

10 + 5,6 = 15,6

= 15,6

k mk mk k lại

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216 nha ban.

Diện tích một mặt hình lập phương đó là:

     216 : 6 = 36 ( cm2 )

Cạnh hình lập phương là 6 cm ( Vì 6 x 6 = 35 cm2 )

Thể tích hình lập phương đó là:

     6 x 6 x 6 = 216 ( cm3 )

          Đáp số: 216 cm3.

0,3234 = 32,34%

0,3234 viết dưới dạng tỉ số phần trăm là 32,34%

Tỉ số giữa hai số là: 8/4 hay 2/1

=> Số bé là:

73,5 : ( 2 + 1 ) = 24,5

Chúc bạn may mắn nhé!

49 voi 24,5 nhe