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43.4%(23.4.7)怎么简算

43.4-(23.4-14.7) =43.4-23.4+14.7 =20+14.7 =34.7

=25×4×7=100×7=700(4)4×9×25=4×25×9=100×9=900(5)43×5×...(10)23×134-34×23=23×(134-34)=23×100=2300(11) 957+(128-157)=...

23×54+34×54-57×44 =(23+34)×54-57×44 =57×54-57×44 =57×(54-44) =57×10 =570 65×43+35×67+24×15 =5×(13×43)+5×(7×67)+(24×3)×5 =5×559+5×469+72×5 =5×(559+469+72) =5×1100 =5500

23.7-1.6-3.7-8.4 87.4-(21.25+17.4) -8...14.6-9.9 1.9+1.99+1.999 19.43-(6.72+1....21.53+4.87-2.53 15.21+(4.79-2.8)12.19-...

例12.简便计算:(1)16×56-16×13+16×61-16×5 (2)43×23+18×23-23...(3)24×25 (4)99×3 (5)103×37 (6)12.5×(100-8) (7)30÷2.5÷...

①6.73+4.6+0.4=6.73+(4.6+0.4)=6.73+5=11.73②4.37+0.9+2.63=(4.37+2.63)+0.9=7+0.9=7.9 ③6.43-2.8-2.2=6.43-(2.8+2.2)=6.43-5=1.43④18.5-(8.5+7.9)=18.5-8.5-7.9=10-7.9=2.1⑤18.75+76.3+1.25+23.7=(18.75+1.25)+(76.3+23.7)=20+100=...

(1)38.67+68.23+45.8=106.9+45.8=152.7(2)98.2-37.18-10.82=98.2-(37.18+10.82)=98.2-48=50.2(3)56.23+31.07-54.1=87.3-54.1=33.2(4)32.6+58.04+61.96=32.6+(58.04+61.96)=32.6+120=152.6(5)100-(28.4+32.05)=100-60.45=39.55(...

=4.26-3.71=0.88-2.12=5.34-69.21=68.4-...25.9+7.82369.2+24.6832.56+2.1398.23+1928...热心网友 | 2016-04-30 2 43 用知道APP,免登陆...

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