(1) 1 7 9 ×[( 3 8 +0.25)÷( 5 6 - 5 9 )] (2)[11.9-3.4×(
(1)179×[(38+0.25)÷(56-59)](2)[11.9-3.4×(10.802-9.802)]÷85%(3)10÷25+212×0.4-125(4)(825...
(1) 1 7 9 ×[( 3 8 +0.25)÷( 5 6 - 5 9 )] (2)[11.9-3.4×(10.802-9.802)]÷85%(3) 10÷25+2 1 2 ×0.4-1 2 5 (4) (8 2 5 -10.5× 4 5 )×(3 1 6 +7.5) .
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包子啊包子0074
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(1) 1 ×[( +0.25)÷( - )] , =1 ×[( + )÷( - )], =1 ×[ ÷ ], =1 × , =4; (2)[11.9-3.4×(10.802-9.802)]÷85%, =[11.9-3.4×1]÷0.85, =[11.9-3.4]÷0.85, =8.5÷0.85, =10; (3) 10÷25+2 ×0.4-1 =0.4+2.5×0.4-1.4, =0.4+1-1.4, =1.4-1.4, =0; (4) (8 -10.5× )×(3 +7.5) =( 8 -8.4)×( 3 + 7 ), =0×10 , =0. |
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