a: 2/3
b: =5/2x22/35=110/70=11/7
a: 2/3
b: =5/2x22/35=110/70=11/7
a) = ……………………………3/7 x 4/5………………………… | 2/5 + 3/4 ………………………..……….…..…………………… |
b) =……2/5 : 4……………………………………….…………… | ……1/4 + 2………………….……….………………………… |
c) =…2/5 : 2/3……………………………………..…………..… | 2/3 - 38…………………………………………………………… |
d) 5 - 2/3………………………………………..…..………… | 2/5 x 3………………………………………………………… |
a, 4/5 - 1/3. 5/3-3/2
b,7/6-2/3 5/4-3/8
c, 5/6-5/8. 7/4-5/6
a) 7 + 3/4 - 5/6 = ?
b) 8 x 4/5 : 6/7 = ?
c) 1/2 + 2/3 + 3/4 = ?
d) 4/5 + 5/4 + 7/20 = ?
a ( 3/4 + 1/2 ) x 5/7 =
Tính bằng hai cách:
Cách 1 :
Cách 2 :
b) 5/7 x 13/21 + 2/7 x 13/ 21=
Tính bằng hai cách :
Cách 1 :
Cách 2 :
c) Tính 7/5 + 4/3 + 7/5 + 4/3 bằng hai cách :
Cách 1 : 7/5 + 4/3 + 7/5 + 4/3 = 7/5 x 2 + 4/3 x 2 =
Cách 2 : 7/5 + 4/3 + 7/5 + 4/3 = ( 7/5 + 4/3) x 2 =
bài 1: Tính
a} 5/12 + 1/3 x 3/5 =
B 7/5 - 4/9 : 2/5 =
C 2/5 x 1/4 : 2/5 =
bài 2: Tìm y
a 42/25 : y/5 = 5/6
b 27/y : 9/4 = 3/7
a, 3/4- 2/5+ 5/12
b, 15/7-4/3- 2/9
c, 3/5+ 2/5x 4/5
d, 4/5 -(6/15 +1/5)
Bài 1 : Tính bằng hai cách
a) ( 6/11 + 5/11 ) x 3/7 =
b) 3/5 x 7/9 - 3/5 x 2/9 =
c) ( 6/7 - 4/7 ) : 2/5 =
d) 8/15 : 2/11 + 7/15 : 2/11 =
Bài 2 : Tính
a) 2 x 3 x4/3 x 4 x 5 =
b) 2/3 x 3/4 x 4/5 : 1/5 =
c) 1 x 2 x 3 x 4 / 5 x 6 x 7 x8 =
d) 2/5 x 3/4 x 5/6 : 3/4 =
a)2/5 + 3/4 e) 1/4+2
b)2/3 - 3/8 g)2/5 nhân 3
c)3/7 nhân 4/5 f)2/5:4
d)2/5:2/3 5-2/3
làm bước trung gian cho mình luôn nhé
d)2/5 : 2/3
c)3/7 nhân 4/5
d)2/5 : 2/3
Dien dau >,<,= :a)7/4-1/3...1/2-2/9.b)7/5-20/25...1/5+4/10. c)11/3-(2/5+3/5)...11/3-2/5-3/5