561-19+58
236+189+64
137+68+63
759-126-259
25×79×4
47×25×4
569-256-44
57×125×8
68+145+55+32
56×51+56×48+56
800-398
42+79+58
①250-250÷25×2
②18÷ ×
③5.2÷0.4÷2.5
④(34- )÷17
⑤4.3×1.75-1.75+ ×6.7
⑥ ×[(72.8-69.6)÷ ]
①(3618÷18-145)×20
②6÷ - ÷6
③(21+ )× +
④ ×[ ÷( - )]
⑤3.5×98+35×0.2