50 + 70 = 120
70 − 40 = 30
20 + 18 = 38
48 − 18 = 30
52 − 2 = 50
67 − 60 = 7
42 + 4 = 46
60 − 9 = 51
90 + 7 = 97
58 + 2 = 60
36 + 64 = 100
45 + 45 = 90
Условие:
Вычисли устно.
50 + 70
70 − 40
20 + 18
48 − 18
52 − 2
67 − 60
42 + 4
60 − 9
90 + 7
58 + 2
36 + 64
45 + 45
50 + 70 = 120
70 − 40 = 30
20 + 18 = 38
48 − 18 = 30
52 − 2 = 50
67 − 60 = 7
42 + 4 = 46
60 − 9 = 51
90 + 7 = 97
58 + 2 = 60
36 + 64 = 100
45 + 45 = 90