(1)1125﹣997 (2)12﹣(1
+2
) (3)(
﹣
)×12
(4)4.35+4.25+3.65+3.75 (5)17﹣3
﹣4
(6)22.3﹣2.45﹣5.3﹣4.55
(7)187.7×11﹣187.7 (8)998+1246 (9)400÷125÷8
(10)1×2
×
(11)34×(2+
) (12)3.4×99+3.4
(13)÷2
+
×
(14)(
+
+
)×72 (15)43
×
+57.125×
﹣0.5
(16)4+3.2+5
+6.8 (17)25×(37×8) (18)125×8.8
(19)17.15﹣8.47﹣1.53 (20)0.125×0.25×32 (21)4.25﹣3﹣(2
﹣1
)
(22)2.42÷+4.58×
﹣4÷3.