Điền dấu > ; < hoặc = vào chỗ chấm cho thích hợp:
a) \(\dfrac{3}{4}.....\dfrac{4}{5}\) b) \(\dfrac{11}{12}.....\dfrac{7}{8}\) c) \(\dfrac{5}{7}+\dfrac{3}{5}.....\dfrac{6}{7}:\dfrac{5}{8}\) d) \(\dfrac{9}{16}-\dfrac{5}{9}.....\dfrac{1}{16}x\dfrac{1}{9}\)
Điền dấu > ; <; = thích hợp vào chỗ chấm:
A. 12/11..... 12/17
B. 5/8 ..... 25/40
C. 3/4.......6/7
D. 5/6 ....... 7/9
Tính nhanh: A) 4/9+1/8+5/9+7/8 B) 1/6+4/6+5/12+7/6+7/12
1/2+2/3+3/4+4/5+5/6+6/7+7/8+8/9+9/10+10/11+11/12+12/13+13/14+14/15=?
1+1+1+1+1+2+3+4+5+6+7+8+9+10 x 1+1+1+1+1+2+3+4+5+6+7+8+9+10 +1+1+1+1+1+2+3+4+5+6+7+8+9+10 - 10 x 9 - 9 + 45 +46 +47 =
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 =
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
1+4=5
2+5=12
3+6=....?
4+7=...?
5+8=.....?
6+9=......?
7+10=.....?
8+11=......?
điền vào chỗ trống
1) Tính
a) 9/12 - 5/12 ; 9/12 - 1/3 ; 7 - 3/2 ; 9/4 - 2
b) 2/7 + 5/7 ; 1/3 + 5/12 ; 2 + 2/5 ; 6/9 + 3
c) 2/3 x 4/7 ; 3/11 x 2 ; 4 x 2/7
d) 8/21 : 4/7 ; 8/7 : 4 ; 5 : 2/3
AI LÀM NHANH VÀ ĐÚNG NHẤT THÌ MÌNH TICK CHO!!!!
Bài 1 : Tính nhanh :
a, 2/3 + 3/4 + 4/5 + 12/9 + 28/6 + 48/15.
b, 3/5 + 4/7 + 2/8 + 10/25 + 9/21 + 28/16 ;
c , 8/7 + 7/6 + 5/8 + 10/12 + 24/28 + 6/16 ;
d, ( 1 + 1/2 ) x ( 1 + 1/3) x ( 1 + 1/4 ) x...x ( 1 + 1/175)