能简算的要简算:(1)241×690÷339÷345×678÷241(2)6-0.65+5 7 20 ×99(3)356×84
能简算的要简算:(1)241×690÷339÷345×678÷241(2)6-0.65+5720×99(3)356×8414-414×356-80÷1356(4)[3.7...
能简算的要简算:(1)241×690÷339÷345×678÷241(2)6-0.65+5 7 20 ×99(3)356×84 1 4 -4 1 4 ×356-80÷ 1 356 (4)[3.75-(0.2+ 1 3 )×4 1 2 ]÷13.5%
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桐脸轻球糖882
推荐于2016-10-20
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(1)241×690÷339÷345×678÷241, =241×690× × ×678× , =(241× )×( ×678)×(690× ), =1×2×2, =4;
(2)6-0.65+5 ×99, =5.35+5.35×99, =(1+99)×5.35, =100×5.35, =535;
(3)356×84 -4 ×356-80÷ , =356×84 -4 ×356-80×356, =356×(84 -4 -80), =356×0, =0;
(4)[3.75-(0.2+ )×4 ]÷13.5%, =[3 -( + )×4 ]÷13.5%, =[3 - × ]÷13.5%, =[ - ]÷13.5%, = ÷13.5%, =1.35÷0.135, =10. |
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