(1)675-(275+43)
=675-275-43
=400-43
=357
故答案为:×.
(2)76×99+76
=76×(99+1)
=76×100
=7600
故答案为:√.
(3)47×99
=47×(100-1)
=47×100-47
=4700-47
=4653
故答案为:×.
(1)675-(275+43)
=675-275-43
=400-43
=357
故答案为:×.
(2)76×99+76
=76×(99+1)
=76×100
=7600
故答案为:√.
(3)47×99
=47×(100-1)
=47×100-47
=4700-47
=4653
故答案为:×.