1)0,81:2,7=0,3
2)4,5*0,12=0,54
3)0,3+0,54=0,84
1/13-0.07
1/3-0.33
1/12-0.08
1/6-0,17
1/11-0,09
1/7-0,14
1/8-0,125(точное значение)
1/9-0,11
1/10-0,10
1) 17.65-9.25=8.40
2) 8.4*2.05=17.22
3) 3.9*0.4=1.56
4)17.22-1.56=15,66
5)15.66:2.9=5.4
Пятачок-синий шарик
Винни-Пух-красный шарик
Кролик-зеленый шарик
(5/7×2 1/3×5/6-1)÷(1-7/8×1 3/5×<span>3/14) = 5/9
1)5/7 × 2 1/3 = 5/7 × 7/3 = 5/3 = 1 2/3
2)1 2/3 × 5/6 = 5/3 × 5/6 = 25/18 = 1 7/18
3) 1 7/18 - 1 = 7/18
4)7/8 × 1 3/5 = 7/8 × 8/5 = 7/5 = 1 2/5
5)1 2/5 × 3/14 = 7/5 × 3/14 = 3/10
6)</span>1 - 3/10 =(1 × 10 - 3 × 1)/10 = (10 - 3)/10 = 7/10
7) 7/18 ÷ 7/10 = 7/18 × 10/7 = 5/9