第 11 页
= = = = = = 280× 4 ÷5 60×8+1570 60×(23-17) = = = = = =
960÷4×9 350÷5×9 450÷5+1250 = = = = = =
(6900-2400)÷5 75÷15+20×5 3090+6×6 = = =
(387-387)+0 160-160÷80 750+550÷5 = = = = = =
(111+189)×3 125×8÷100 6×250×0 = = = = = =
(1+7)×(16-6) 810×4÷4= 33÷11+4×9 = = = = = = 187+299-299 587+49-467 753-154×4
第 12 页
= = = = = =
2660+26÷26 798-245×2 654-123×3 = = = = = =
153÷153+657 32÷(32÷16) 300-(300-222) = = = = = =
75÷15+20×5 (150-75)×(25-20) = = =