7phan 19 * 1phan 3 +7 phan 19 * 2phan 3
tinh bang 2 cach ;a; mo ngoac 1phan 3 cong2 phan 5 dong ngoac nhan 3phan 4 b;mo ngoac 7phan 9 cong 2phan 3 dong ngoac chia 5phan 6
TINH A 2PHAN 8 NHAN 4 PHAN 7 CHIA 3PHAN 14 B 6 CHIA 1PHAN 3 NHAN 2PHAN 9 GIUP TO GAP TO CAN LOI GIAI CHI TIET VA NGAY BAY GIO
dien dau <,>,=
1phan2+ 1phan4... 1
1phan 5+ 2 phan 13...1
1phan 12+ 2 phan 14 ...1
1phan 2 +2phan 3... 1
1phan2+ 1phan4 < 1
1phan 5+ 2 phan 13 < 1
1phan 12+ 2 phan 14 < 1
1phan 2 +2phan 3 > 1
x+7phan 12 =17 phan 18 -1phan 8
x + \(\frac{7}{12}\)= \(\frac{17}{18}\)- \(\frac{1}{8}\)
x + \(\frac{7}{12}\)= \(\frac{7}{8}\)
x = \(\frac{7}{8}\)- \(\frac{7}{12}\)
x = \(\frac{7}{24}\)
-----------------------------------------
x + 7/12 = 17/18 - 1/8 = 7/8
x = 7/8 - 7/12
x = 7/24
3m 6dm =...dm
3kg 150g =.....g
400m2=......ha
0,6 gio =..... phut
2phan 5÷ 2phan 3 -1phan 6
1phan 2 +3 ×1phan 6
3m 6dm = 36 dm
3kg 150g= 3150g
400m2=0,04ha
0,6 giờ =36 phút
2/5:2/3-1/6=13/30
1/2+3x 1/6=1/2+1/2=1
36 dm
3150 g
0,4 ha
36 phút
\(\frac{2}{5}\div\frac{2}{3}=\frac{6}{10}=\frac{3}{5}\)
\(\frac{3}{5}-\frac{1}{6}=\frac{13}{30}\)
\(3\times\frac{1}{6}=0,5\)
\(\frac{1}{2}+0,5=\frac{1,5}{2}\)
Ko chắc đâu nhé
1so sanh phan so
12/25 va 25/49 80/95 va 144/153
6 tinh gia tri bieu thucphanso
1phan 72+1phan56+1 phan 42+ 1phan 30 +1phan 20 + 1phan 12
7tinh nhanh phan so
17 phan 12+ 9phan 7-(2phan7 -7phan 12)
11phan7 nhan (38 phan 45 nhan 17 phan 11 )
(1+1phan2 ) nhan (1+1phan3 ) nhan ....... nhan (1+1phan2005
9 cho phan so 25phan 42 tim so tu nhien a sao cho khi them vao tu so cua phan so da cho va giu nguyen mau so thi duoc phan so moi bang 6phan 7
tong hieu dai cua sau khi ban bot ba tam vai la 112 m.sau khi ban bot 3 phan 7 tam vai xanh , 1phan 5 tam vai do va 2phan 5 tam vai trang thiphan con lai cua ba tam vai bang nhau .Tinh chieu dai moi tam vai
C= 19 phan 25(3 phan 7 +25 phan 19)-3phan 7(19 phan 25-7 phan 3)
tinh nhanh neu co the
0,25-5 phan 3-5 phan 6