<span>1)
3/5+ 3 3/4+1 2/5 +1 1/4 =
(3/5+1 2/5) + (3 3/4+1 1/4) =
1 5/5 + 4 4/4 =
2 + 5 = 7,
2)
3,2*5/6*5*6 =
3,2 * 5 * 5 = 80,
3)
2 1/4*1 1/7*4*7 =
(2 1/4 * 4) * (1 1/7 * 7) =
(9/4 * 4) * (8/7 * 7) =
9 * 8 = 72,
4)
3,81*4,3+6,19*4,3 =
4,3 * (3,81 + 6,19) =
4,3 * 10 = 43,
</span>
А)-12 1/3*3=-37/3*3=-37
б)4 1/4*2/3=17/4*2/3=17/6=2 5/6
в)-8 8/11*(-4 1/8)=96/11*33/8=12*3=36
г)14/50:(-14/25)=-1/2
<span>111-11=100
3*33+3:3=100
5*5*5-5*5=100
(666-6):66=100
(1*2+3)*4*5=100</span>
316,8:0,48-8,47*23
1) 316,8:0,48= 31680:48= 660
2) 8,47*23=194,81
3)660-194,81=465,19
0,0057
0,0964
0,2
0,205
0,21
0,5125
0,801
0,81