( 565 + 56 + 45 ) x 63 = ????
Bằng abo nhiểu nhỉ ???
Chi tiết ạ
\(a.145\times565+145\times54+56\times145\)
\(=145\times\left(565+54+56\right)\)
\(=145\times675\)
\(=97875\)
\(b.225\times104\)
\(=\left(100+4\right)\times225\)
\(=22500+900\)
\(=23400\)
\(c.1000:\left(20\times25\right)\)
\(=1000:500\)
\(=2\)
\(d.\left(206\times20\right):2\)
\(=206\times\left(20:2\right)\)
\(=206\times10=2060\)
x+1=1/2/3/4/6/56/565/6=3
Quy dong mau so hai phan so 5/7 va 8/9 ta duoc:
A.45/63 va 56/63
B.45/62 va 35/63
C.35/62 va 72/63
D.40/63 va 63/63
63 x 2589 + 14589 +1528-565 = ?
mình là nguyễn thúy hiền
63 x 2589 +14589 + 1528 -565
=163107+14589+1528-565
63 x 2589 + 14589 + 1528 - 565=163107+14589+1528-565
=177696+1528-565
=179224-565
=178659
565 x 45 = ???
Giúp với
= 25425 nha
TK MK NHA CÁC BẠN MK ĐG BỊ ÂM ĐIỂM
tinh bang cach thuan tien :
a 36 x 45 tren 6 x 5
b 56 x 63 tren 9 x 8
Tính băng cách thuậ̣̣̣n tiện nhất
a> 36 x 45 / 6 x 5 b>56 x 63 / 9 x 8
a) 36 x 45 / 6 x 5 = 36 / 6 x 45 / 5 = 6 x 9 = 54
b) 56 x 63 / 9 x 8 = 56 / 8 x 63 / 9 = 7 x 7 = 49
rut gon roi tinh 17/51 x 45/30
24/15 x 56/72 x10 14
32/48 x 35/21 x 63/14 x 9/ 30
Câu 1: \(\frac{17}{51}\)x \(\frac{45}{30}\)= \(\frac{1}{3}\)x \(\frac{3}{2}\)
= \(\frac{1}{2}\).
Câu 2: \(\frac{24}{15}\)x \(\frac{56}{72}\)x \(\frac{10}{14}\)= \(\frac{8}{5}\)x \(\frac{7}{9}\)x \(\frac{5}{7}\)
= \(\frac{56}{45}\)x \(\frac{5}{7}\)
= \(\frac{8}{9}\)
Câu 3: \(\frac{32}{48}\times\frac{35}{21}\times\frac{63}{14}\times\frac{9}{30}=\frac{2}{3}\times\frac{5}{3}\times\frac{9}{2}\times\frac{3}{10}=\frac{3}{2}\)
k nha
a)17/51x45/40=1/3x3/2=3/6=1/2
b)24/15x56/72x10/14=8/5x7/9x5/7=8/9
c)32/48x35/21x63/14x9/30=2/3x5/3x9/2x3/10=3/2
x x 134 -x x24 -x x 10 = x x ( 134 - 24 - 10)
x = x x 100
x = 1300 : 100
x = 13