chuyen cac so thap phan sau thanh phan so thap phan roi chuyen sang hon so
43,2
52,04
4,01
b)chuyen cac phan so thap phan sang hon so roi sang so thap phan
45/10
2167/1000
2167/100
Khi chuyen dau phay cua so thap phan A sang ben trai hai chu so thi so do giam di 100 lan hay A=B*100
chuyen cac phan so thap phan thanh phan so thap phan ( theo mau);
162/10= 16 2/10= 16,2
a)7975/10
b)7409/100 ; 806/100
c) 64/10 ; 372/10 ; 1954/100
d) 1942/100; 6135/1000; 2001/1000
7/100 chuyen thanh so thap phan
chuyen cac phan so sau thanh phan so thap phan co mau so la 100
12/24
Hon so 7 19/100 chuyen thanh so thap phan , ta duoc : a)7,19 ; b) 7,019 ; c) 71,9 ; d) 7,109
Chuyen thanh so thap phan roi tim x:
x-25/100=28/10+123/10
x+21/10=11x5/10
Chuyen cac hon so thanh phan so thap phan
4va3phan10 21va7/100 7va39/100 6va123/1000
So sanh phan so thap phan
7/10 .... 9/10 92/100..... 87/100
5/10 .... 50/100 8/10 .....29/100