253985÷5 = 50797
- 2 5 3 9 8 5 5
2 5 5 0 7 9 7 5 × 5 = 25
- 3 9 25 - 25 = 0
3 5 5 × 7 = 35
- 4 8 39 - 35 = 4
4 5 5 × 9 = 45
- 3 5 48 - 45 = 3
3 5 5 × 7 = 35
0 35 - 35 = 0
250324÷2 = 125162
- 2 5 0 3 2 4 2
2 1 2 5 1 6 2 2 × 1 = 2
- 5 2 - 2 = 0
4 2 × 2 = 4
- 1 0 5 - 4 = 1
1 0 2 × 5 = 10
- 3 10 - 10 = 0
2 2 × 1 = 2
- 1 2 3 - 2 = 1
1 2 2 × 6 = 12
- 4 12 - 12 = 0
4 2 × 2 = 4
0 4 - 4 = 0
82551÷3 = 27517
- 8 2 5 5 1 3
6 2 7 5 1 7 3 × 2 = 6
- 2 2 8 - 6 = 2
2 1 3 × 7 = 21
- 1 5 22 - 21 = 1
1 5 3 × 5 = 15
- 5 15 - 15 = 0
3 3 × 1 = 3
- 2 1 5 - 3 = 2
2 1 3 × 7 = 21
0 21 - 21 = 0
523125÷9 = 58125
- 5 2 3 1 2 5 9
4 5 5 8 1 2 5 9 × 5 = 45
- 7 3 52 - 45 = 7
7 2 9 × 8 = 72
- 1 1 73 - 72 = 1
9 9 × 1 = 9
- 2 2 11 - 9 = 2
1 8 9 × 2 = 18
- 4 5 22 - 18 = 4
4 5 9 × 5 = 45
0 45 - 45 = 0
Пошаговое объяснение:
1) (3/7 * 1/4) * (-4) = 3/7 * (1/4 * (-4)) = 3/7 * (-1) = -3/7;
ответ: -3/7.
2) (-4 1/5 * 1,3) * 10/13 = (-4 1/5 * 1 3/10) * 10/13 = (-21/5 * 13/10) * 10/13 = -21/5 * (13/10 * 10/3) = -21/5 * 1 = -21/5 = -4 1/5;
ответ: -4 1/5.
3) (-5 6/7 * 3/13) * (-4 1/3) = (-41/7 * 3/13) * (-13/3) = -41/7 * (3/13 * (-13/3)) = -41/7 * (-1) = 41/7 = 5 6/7;
ответ: 5 6/7.
4) -(7 5/12 + 7/36) * 5 1/7 = -(89/12 + 7/36) * 36/7 = -89/12 * 36/7 - 7/36 * 36/7 = -89/12 * 36/7 - 1 = -267/7 - 1 = -267/7 - 7/7 = -274/7 = -39 1/7.
ответ: -39 1/7.
в этой тетради 1 верное утверждение под номером 99: "в этой тетради ровно 99 неверных утверждений"