Các câu hỏi tương tự
2/3 + 3/4
9/4 + 3/5
5/24 + 1/4
3/15 - 5/35 18/27 - 2/6 37/12 - 3
11/9 x 3/22 7/13 x 13/7 4 x6/7
2/5 : 3/10 3/8 : 9/4 8/21 : 4/7
Viết sô thích hợp vào chỗ chấm điểm
A) 3/4=3*4/4*4=…\……
2/7=2*.../7*3=…\…
24/42=24:6/42:…=…\…
B) 2/3=6/…
18/24=6/…
2/7=8/…=…\35
3/5=…/20
32/24=…/3
48/72=…/9=2/…=…/24
5/8 + 7/24
6/5 + 9/30
7/12 + 5/2
9/21 + 6/49
5/9x2/7= 2/3+5/6=
5+9/14= 6/54:8=
5-13/17= 3:9/10=
24/72-202/909= 9/11:5/13
mình cần gấp lắm
Đúng ghi Đ, sai ghi S
5/6 - ( 7/12-1/4 ) =1/2
11/6 - ( 1/2 + 1/24 ) =3/9
19/24 -2/8 = 5/2
8/9 - 1/3 - 5/18 = 5/18 cảm ơn
Tính :
2/5 + 11/15 =
7/8 - 7/9 =
11/13 x 26/31 =
16/24 : 4 =
30 : 6/5 =
9/16 : 4 =
1/2 : 1/3 x 8/15 =
tính nhanh:
a) 1/2*2/3 ; 5/6*6/7 ; 10/15*15/20 ;24/25*25/36
b)1/2*2/3*3/4*4/5*5/6*6/7*7/8*8/9*9/10
A) 5\4 + 3\5 B) 7\8 + 9\24 C) 2\36 + 1\6 + 5\12
giúp mình với
bài 1
4/7+4
3+6/11
3-5/7
21/9-2
15/24+2
63/45-20/25
3/4-2/8
6/7-5/8
37/45-5/9
46/39-11/13
5/12+3/4+1/3
1/2+3/7+11/14
7/10-(1/5+1/4)
15/4-2/3-3/4