Задачи по матеше 1) 5/6 + 7/12 : 7/2 и 11/18 - 4/9 * 3/16
2) (6/5 - 3/4 ) * 2/3 и (6/5 - 2/3) * 1/2
3) 1/4 * 8/6 - 7/18 * 9/21
4) -27/20 * (-5/9) -5/24 * (-22/5)
5) 2/7 + 3/8 : 7/32
6) 72 * (19/24 - 7/12 + 3/8)
7) 72/73 * 34/65 + 72/73 * 39/65
8) 15 * ( 1+ 1/3 - 1/5)
9) 107/89 * 64/70 + 107/89 * 25/70
10) (7-56/36 : 49/6) * 6/7
11) (12-76/81 : 64/9) * 9/37
12) 1 - 4/7 : 16/21
13) 7/15 : (6/10 - 8/3) +19 * 2/31
14) 0.005 * 50 * 50000
15) 0,7 * 700 * 0,00007
16) (1 1/35 : 4/5 -1 8/35) *3 1/3
17) -2,54 + 6,6 * 4,1
18) -7 * (-4,7) - 6,8
Задачи по матеше 1) 5/6 + 7/12 : 7/2 и 11/18 - 4/9 * 3/16
2) (6/5 - 3/4 ) * 2/3 и (6/5 - 2/3) * 1/2
3) 1/4 * 8/6 - 7/18 * 9/21
4) -27/20 * (-5/9) -5/24 * (-22/5)
5) 2/7 + 3/8 : 7/32
6) 72 * (19/24 - 7/12 + 3/8)
7) 72/73 * 34/65 + 72/73 * 39/65
8) 15 * ( 1+ 1/3 - 1/5)
9) 107/89 * 64/70 + 107/89 * 25/70
10) (7-56/36 : 49/6) * 6/7
11) (12-76/81 : 64/9) * 9/37
12) 1 - 4/7 : 16/21
13) 7/15 : (6/10 - 8/3) +19 * 2/31
14) 0.005 * 50 * 50000
15) 0,7 * 700 * 0,00007
16) (1 1/35 : 4/5 -1 8/35) *3 1/3
17) -2,54 + 6,6 * 4,1
18) -7 * (-4,7) - 6,8
2) (6/5 - 3/4 ) * 2/3 и (6/5 - 2/3) * 1/2
3) 1/4 * 8/6 - 7/18 * 9/21
4) -27/20 * (-5/9) -5/24 * (-22/5)
5) 2/7 + 3/8 : 7/32
6) 72 * (19/24 - 7/12 + 3/8)
7) 72/73 * 34/65 + 72/73 * 39/65
8) 15 * ( 1+ 1/3 - 1/5)
9) 107/89 * 64/70 + 107/89 * 25/70
10) (7-56/36 : 49/6) * 6/7
11) (12-76/81 : 64/9) * 9/37
12) 1 - 4/7 : 16/21
13) 7/15 : (6/10 - 8/3) +19 * 2/31
14) 0.005 * 50 * 50000
15) 0,7 * 700 * 0,00007
16) (1 1/35 : 4/5 -1 8/35) *3 1/3
17) -2,54 + 6,6 * 4,1
18) -7 * (-4,7) - 6,8
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1) 5/6 + 7/12 ÷ 7/2 = 5/6 + 7/12 ÷ 42/12 = 5/6 + 7/42 = 30/42 + 7/42 = 37/42
11/18 - 4/9 3/16 = 11/18 - 4/9 3/16 = 11/18 - 4/48 = 11/18 - 1/12 = 22/36 - 3/36 = 19/36
2) (6/5 - 3/4) 2/3 = (24/20 - 15/20) 2/3 = 9/20 * 2/3 = 18/60 = 3/10
(6/5 - 2/3) 1/2 = (18/15 - 10/15) 1/2 = 8/15 * 1/2 = 8/30 = 4/15
3) 1/4 8/6 - 7/18 9/21 = 2/24 - 63/378 = 1/12 - 7/42 = 7/84 - 4/84 = 3/84 = 1/28
4) -27/20 (-5/9) - 5/24 (-22/5) = 135/180 + 22/120 = 135/180 - 22/120 = 9/12 - 11/30 = 45/60 - 22/60 = 23/60
5) 2/7 + 3/8 ÷ 7/32 = 2/7 + 3/8 ÷ 7/32 = 2/7 + 3/8 * 32/7 = 2/7 + 4/1 = 2/7 + 4 = 30/7
6) 72 (19/24 - 7/12 + 3/8) = 72 (38/48 - 28/48 + 18/48) = 72 * 28/48 = 2/3
7) 72/73 34/65 + 72/73 39/65 = (72/73) (34/65 + 39/65) = 72/73 73/65 = 72/65
8) 15 (1 + 1/3 - 1/5) = 15 (15/15 + 5/15 - 3/15) = 15 * 17/15 = 17
9) 107/89 64/70 + 107/89 25/70 = 107/89 (64/70 + 25/70) = 107/89 89/70 = 107/70
10) (7 - 56/36 ÷ 49/6) 6/7 = (7 - 7/9) 6/7 = (63/9 - 7/9) 6/7 = 56/9 6/7 = 56/42 = 4/3
11) (12 - 76/81 ÷ 64/9) 9/37 = (12 - 76/81 ÷ 64/9) 9/37 = (12 - 76/81 9/64) 9/37 = (12 - 34/81) 9/37 = (972/81 - 34/81) 9/37 = 938/81 * 9/37 = 18
12) 1 - 4/7 ÷ 16/21 = 1 - 4/7 * 21/16 = 1 - 3/4 = 1/4
13) 7/15 ÷ (6/10 - 8/3) + 19 * 2/31 = 7/15 ÷ (3/5 - 8/3) + 38/31 = 7/15 ÷ (-9/5) + 38/31 = -7/3 + 38/31 = -79/33
14) 0.005 50 50000 = 250 * 50000 = 12500000
15) 0.7 700 0.00007 = 490 * 0.00007 = 0.0343
16) (1 1/35 ÷ 4/5 - 1 8/35) 3 1/3 = (1 + 1/35 ÷ 4/5 - 4/35) 10/3 = (35/35 + 1/28 - 4/35) 10/3 = 10/28 10/3 = 100/84 = 25/21
17) -2.54 + 6.6 * 4.1 = -2.54 + 26.86 = 24.32
18) -7 * (-4.7) - 6.8 = 32.9 - 6.8 = 26.1