Question

2. Выполни вычисления.
490 + 60 =
V
720 + 90 =
510 - 40 =
920 - 50 =
1000 - 70 =
286 + 7 =
852 - 9 =
567 + 6 =
345 - 8 =​

Answer 1

Ответ:

Объяснение:

490 + 60 =550  

720 + 90 =810

510 - 40 =470

920 - 50 =870

1000 - 70 =930

286 + 7 =293

852 - 9 =843

567 + 6 =573

345 - 8 =​337