1) 69 - 28 = 4141 : 4 = 10.2510.25 - 12 = -1.75
2) 21 + 3 × 9 = 21 + 27 = 4848 - 24 = 24
3) 18 : 3 = 66 × 7 = 4242 + 2 = 44
4) 10 × 2 = 2021 : 3 = 720 + 7 = 27
Последовательность решения:1) 69 - 28 = 412) 41 : 4 = 10.253) 10.25 - 12 = -1.75
1) 21 + 3 × 9 = 482) 48 - 24 = 24
1) 18 : 3 = 62) 6 × 7 = 423) 42 + 2 = 44
1) 10 × 2 = 202) 21 : 3 = 73) 20 + 7 = 27
1) 69 - 28 = 41
41 : 4 = 10.25
10.25 - 12 = -1.75
2) 21 + 3 × 9 = 21 + 27 = 48
48 - 24 = 24
3) 18 : 3 = 6
6 × 7 = 42
42 + 2 = 44
4) 10 × 2 = 20
21 : 3 = 7
20 + 7 = 27
Последовательность решения:
1) 69 - 28 = 41
2) 41 : 4 = 10.25
3) 10.25 - 12 = -1.75
1) 21 + 3 × 9 = 48
2) 48 - 24 = 24
1) 18 : 3 = 6
2) 6 × 7 = 42
3) 42 + 2 = 44
1) 10 × 2 = 20
2) 21 : 3 = 7
3) 20 + 7 = 27