49ⅹ48+49ⅹ54-94x2的简便计算怎么算?

2025-03-19 11:59:27
推荐回答(3个)
回答1:

49ⅹ48+49ⅹ54-94x2
=49×(48+54)-94×2
=49×102-94×2
=49×100+49×2-94×2
=4900-2×(94-49)
=4900-2×45
=4900-90
=4810

回答2:

49×48+49×54-49×2
=49×(48+54-2)
=49×100
=4900

回答3:

49ⅹ48+49ⅹ54-49x2
=49x(48+54-2)
=49x100
=4900