递等式计算,能简便计算的就简便计算,请看补充,谢谢①2.7×4.3+27×0.48+0.27×8②3.6×7.2+3.6×1.1-8.3×2.6③3.56×3.5+0.356×65

来源:学生作业帮助网 编辑:作业帮 时间:2024/07/19 09:59:17
递等式计算,能简便计算的就简便计算,请看补充,谢谢①2.7×4.3+27×0.48+0.27×8②3.6×7.2+3.6×1.1-8.3×2.6③3.56×3.5+0.356×65
xRKN@J/Ef&0D/0¸0!1.drgMݐ0Jf„4~yUg{l_ߺja=O;^]CxnO bf\FM^JPup d]PM&xAji7ӡt@A13r%"$v&d0!=*+@!֡ Vg[qFъ"HPڬ!;tPB^qؠțDJgdžM uaf.=bhjyd.gIo)1WU

递等式计算,能简便计算的就简便计算,请看补充,谢谢①2.7×4.3+27×0.48+0.27×8②3.6×7.2+3.6×1.1-8.3×2.6③3.56×3.5+0.356×65
递等式计算,能简便计算的就简便计算,请看补充,谢谢
①2.7×4.3+27×0.48+0.27×8
②3.6×7.2+3.6×1.1-8.3×2.6
③3.56×3.5+0.356×65

递等式计算,能简便计算的就简便计算,请看补充,谢谢①2.7×4.3+27×0.48+0.27×8②3.6×7.2+3.6×1.1-8.3×2.6③3.56×3.5+0.356×65
(1) 2.7×4.3 + 27 ×0.48 + 0.27 ×8
=2.7×4.3 + 2.7×4.8 + 2.7×0.8
=2.7(4.3 + 4.8 + 0.8) = 2.7 ×9.9 =2.7×(10-0.1)=2.7×10 - 2.7×0.1 =27 - 0.27 =26.73
(2) 3.6×7.2 + 3.6×1.1-8.3×2.6
=3.6×(7.2 + 1.1) - 8.3×2.6
=3.6×8.3 - 8.3×2.6
=8.3(3.6 - 2.6) = 8.3
(3) 3.56×3.5 + 0.356×65
= 3.56×3.5 + 3.56×6.5
= 3.56×(3.5 + 6.5)
= 3.56×10 = 35.6