212. (987 − 879) · 6, 900 − 139 · 5, 2 · (293 + 62), 4 · 197 − 189, 3 · 242 + 824 : 4, (4 · 209 − 228) : 8

Задание 212 — ответы:

1. \((987-879)\cdot 6 = 108\cdot 6 = \mathbf{648}\)
2. \(900-139\cdot 5 = 900-695 = \mathbf{205}\)
3. \(2\cdot(293+62) = 2\cdot 355 = \mathbf{710}\)
4. \(4\cdot 197-189 = 788-189 = \mathbf{599}\)
5. \(3\cdot 242+824:4 = 726+206 = \mathbf{932}\)
6. \((4\cdot 209-228):8 = (836-228):8 = 608:8 = \mathbf{76}\)