`5 / 6 + 15 / 8 = 20 / 24 + 45 / 24 = 65 / 24`
\(\dfrac{5}{6}+\dfrac{15}{8}=\dfrac{20}{24}+\dfrac{45}{24}=\dfrac{20+45}{24}=\dfrac{65}{24}\)
4/7x21/16:5/8=
15/8-4/9x6/8+1/6=
7/15+(5/6-1/3)=
10/3...1/3. 10/6...3/8. 17/4...5/6. 1/3...5/9 5/8...7/5 3/4...15/6 10/9...10/11 7/8...7/2 15/9...3/8 15/7...15/8 16/5...16/7 25/11...1
5/6 + 5/8 + 3/4
12/15 + 3 + 3/5
4/3 x 7/8 x 5
8/9 x 6/5 : 3
7/12 + 5/8 x 4/3 - 3/4
(8/5 - 7/6) : 13/15 + 1/4
Trong các phân số 3/5 ; 9/8 ; 8/11 ; 6/5 ; 6/6 ; 14/13 ; 25/28 ; 15/15 có các phân số bé hơn 1 là.
Điền dấu : >,<,=
a,5/3 x 7/10 .... 5/7 : 7/10
b, 4/5 x 5/6 ..... 8/9 : 4/3
c, 5/11 x 33/15 ..... 6/17 x 34/25
d, 15/19 x 38/5 ..... 15/16 : 3/8
Mong mn làm giúp ạ
Điền dấu <>=?
5/6+3/4...19/11
17/12-9/8...1/3
4/9*6/5...8/15
15/4:3/8...8
tinh
a 7/15 + (5/6 - 1/3) =
b 4/7 *21/16 : 5/8 =
c 15/8 - 4/9 * 6/8+ 1/6 =
d 5/12+(3/4 + 2/3 ) : 34/3 =
a) 60 × (7/12 + 4/15) =
b) 5/6 ×( 6/5 - 6/7 ) =
c) 1/2 × 2/3 × 3/4 × 4/5 × 5/6× 6/7 × 7/8 × 8/9 =
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
tính
2 phần 6 + 5 phần 12
7 phần 15 + 3 phần 5
8 phần 15 + 9 phần 15
