5237+3997
=5237+4000-3
=9237-3
=9234
6453--1998
=6453-2000+2
=8453+2
=8455
17.42--5.87+2.58--4.13
=(17.42+2.58)-(5.87+4.13)
=20-10
=10
9.728/3.2/5
=9.72÷(3.2×5)
=9.72÷16
=0.6075
钱都不给啊?
5237+3997 6453-1998
=5237+4000-3 =6453-2000+2
=9237-3 =4453+2
=9234 =4455
下两道给钱再解答,哈哈
5237+3997 6453--1998 17.42--5.87+2.58--4.13 9.728/3.2/5
=5237+4000-3 =6453-2000+2 =(17.42+2.58)-(5.87+4.13) =9.728/(3.2x5)
=9237-3 =2453+2 =20-10 =9.728/16
=9234 =2455 =10 =0.608