До едениц 35, 22; 47, 842 ; 356, 5 -округлить

35.22  = 35 47.842  = 48 356.5 = 357

35; 48; 357 вот и все трололо

(3/4  - 8 1/4) ÷ 3 1/2         (-1 7/8  +  3 1/8) ÷  1 3/7   --         =  - 68  37/56, (-4 2/3  +  5) ÷ 10               (-1 3/8 +  2) ÷ 3 1/81) 3/4 - 8 1/4 = 3/4 - 33/4 = -  30/4 = - 7 2/4 = - 7 1/2,2) -7 1/2  ÷ 3 1/2 = -15/2  ÷ 7/2 = - 15/2 * 2/7 = - 15/7 = - 2 1/7,3) -4 2/3 + 5 = 1/3,4) 1/3  ÷ 10 = 1/3 * 1/10 = 1/30,5) -2 1/7  ÷ 1/30 = -15/7  ÷ 1/30 = -15/7 * 30/1 = -450/7 = -64 2/7,6)  -1 7/8  +  3 1/8 = -15/8 + 25/8 = 10/8 = 1 2/8 = 1 1/4, 7) 1 1/4  ÷  1 3/7 = 5/4  ÷ 10/7 = 5/4 * 7/10 = 7/8,8)  -1 3/8 +  2 = 5/8,9) 5/8  ÷ 3 1/8 = 5/8    ÷ 25/8 = 5/8 * 8/25 = 1/5,10) 7/8  ÷ 1/5 =7/8 * 5/1 = 35/8 = 4 3/8,11) -64 2/7 - 4 3/8 = - (64 2/7 + 4 3/8) = - (68 + 16/56 + 21/56) = - 68  37/56

(3/4  - 8 1/4) ÷ 3 1/2         (-1 7/8  +  3 1/8) ÷  1 3/7   --         =  - 68  37/56, (-4 2/3  +  5) ÷ 10               (-1 3/8 +  2) ÷ 3 1/81) 3/4 - 8 1/4 = 3/4 - 33/4 = -  30/4 = - 7 2/4 = - 7 1/2,2) -7 1/2  ÷ 3 1/2 = -15/2  ÷ 7/2 = - 15/2 * 2/7 = - 15/7 = - 2 1/7,3) -4 2/3 + 5 = 1/3,4) 1/3  ÷ 10 = 1/3 * 1/10 = 1/30,5) -2 1/7  ÷ 1/30 = -15/7  ÷ 1/30 = -15/7 * 30/1 = -450/7 = -64 2/7,6)  -1 7/8  +  3 1/8 = -15/8 + 25/8 = 10/8 = 1 2/8 = 1 1/4, 7) 1 1/4  ÷  1 3/7 = 5/4  ÷ 10/7 = 5/4 * 7/10 = 7/8,8)  -1 3/8 +  2 = 5/8,9) 5/8  ÷ 3 1/8 = 5/8    ÷ 25/8 = 5/8 * 8/25 = 1/5,10) 7/8  ÷ 1/5 =7/8 * 5/1 = 35/8 = 4 3/8,11) -64 2/7 - 4 3/8 = - (64 2/7 + 4 3/8) = - (68 + 16/56 + 21/56) = - 68  37/56