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234乘以98除以49巧算怎么做

=234×(98÷49) =234×2 =468

233+67×15=233+1005=1238, 234×98÷49=234×(98÷49)=234×2=468, 18900÷(918-891)=18900÷27=700, 125×(8+4)×25=125×8×25+125×4×25=1000×25+125×100=25000+12500=37500

234-34×4巧算 解: 234-34×4 =234-34-34×3 =200-102 =98

234+66X8 =234+66+66X(10-3) =300+660-198 =960-200+2 =760+2 =762

234+342+423 = (200+300+400)+(30+40+20)+(4+2+3) = 900+90+9 = 999

234×17-(16+16×233)+234 =234×17-16×(1+233)+234 =234×17-234×16+234 =234×(17-16+1) =234×2 =468

234+58+142+66 =(234+66)+(58+142) =300+200 =500

389-497+234 =390-1+230+4-500+3 =620-500+6 =126

(234+826)×23 =1060×23 =1000×23+60×23 =23000+1380 =24380 你好,本题已解答,如果满意 请点右上角“采纳答案”。

=906+234-555 =1140一600十45 =540+45 =585

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