Tinh bang cach thuận tien : A) 328450-296+72296-450+600000
Tính nhanh :
328450 - 296 + 72296 - 450 + 6000000
Tinh bang cach thuận tien : C: 19994*867+1994*133
1994*867+1994*133
=1994*(867+133)
=1994*1000
=1994000
Tinh bang cach thuận tien: D: 1994*867+1995*133
: D: 1994*867+1995*133=39890000
Tinh bang cach thuận tien 4+8+12+16+20+24+28????
4+8+12+16+20+24+28
= (16+24)+(28+12)+20+4+8
= 40+40+20+12
= 112
tinh bang cach thuận tien nhất: 13/19 . (19/13 - 7/9)
Tinh bang cach thuận tiện18,689:85+18,689+18,689:14
= 18,689: (85+1+14)
=18.695: 100
=0,18695
= 18,689 :(85+14+1)
=18,689:100
=1868,9
90872:296
tinh gia tri cua bieu thuc
6- 3\7*14\9=
tinh bang cach thuan tien
3\4*4\7= 3\7* 3\4+3\4=
ai tra loi nhanh thi minh tik cho
\(90872:296=307\)
\(6-\frac{3}{7}\)X \(\frac{14}{9}=\frac{124}{23}\)
\(\frac{3}{4}\)X \(\frac{4}{7}=\frac{3}{7}\)X \(\frac{3}{4}+\frac{3}{4}=\frac{9}{28}+\frac{3}{4}=\frac{15}{14}\)
tinh bang cach thuan tien nhat a) 48,25+12,72+51,75+87,28=??
48,25 + 12,72 + 51,75 + 87,28
= (48,25 + 51,75) + (12,72 + 87,28)
= 100 + 100
= 200
a) 48,25+12,72+51,75+87,28
= (48,25+51,75) + (12,72+ 87,28)
= 100 + 100
= 200