乘法结合律和交换律【1】 31215215445×6×5 3×4×3 9×5×18 7×16×513×7×14 23274845217×4×6×(×) ×(125×34) ××27 5418301792714×25×5 5475322254321××7××5××××6 5×9×8 4551067535乘法分配律 3718551827( - )×60(18+ )×18 ( - )× 6 ×(+) 125969518301218481920(20+ 5)× 5 (9+27)×27 (+ 3)×24 (- )×20 515625536123(24- )××(9+ ) (+25)× 25( - )×18 24781563569173753431333212×(+ +) ×(+ 2) (+ )×35 ×5+ × 246417457445乘法分配律 46365551676275 ×+××+ ××- ××6 +12× 6 7137136996135135122237433363635348×11+11×80.92×1.41+0.92×8.59 27×+× ×+ ×42747137131673799345×13-5×13 1.3×11.6-1.6×1.3 5×11.6+18.4×521×7+7×21 5355224347×8+8×73×7+3×5 4 ×10 25 ×8 3 ×2.5 58563346533100×101 × 78 ×28 36× 21× 37× 772735203534629276525× 24 34×35 13×1227×26 31 × 30 28× 27 7155133(5+ 7)×7 ×5 ( - )×5 × 12 ( - )×6×18(5+4 )× 25 12569乘法分配律 48218418( + )×7×9 20+ 5)× 5×4 (9+27)×27×3 (24+ 3)×24 7955332321(20+ 8)×20×8 3×12×(3- 6) ( - )×18×2 × 99 + 695571712727( - )×6×10 6 ×5×(18+30) ( - )×60 30×(18+30) 125125777766 ×101- ×101- 12×+ 8×7+83×20+3 1010101013137799550.92×99+0.92 14×13-13 1.3×11-1.3 5×19+57×13+7 55226655333312×+17×9+ 94×27+ 4 23×4+ 4 1313简便运算 1271463632272( - )×60 ×+ ×25 ×8 ×(15×)×8×7×32 125713713827281533313×3 15 ×3 + 10 ×3 - 3 3 × 99 + 3 ( 5 - 5 )×18 34 ×25 214214455695577347132272 ×101- 36× ( - )×60 25 ×8 ×(15×)× 1010351258272815分数混合计算练习题 21134123521×(7 - ) (+ 25 )× 50 1- ×3×5+5 6351425164122295252+ 4×66×(5 -3) 5×10+ 101-7× 5475543154612×6+1213×7+82+(4×5)- × 21794 2022年3月23日;第2页共2页 本文来源:https://www.wddqw.com/doc/ecdc1bfb75a20029bd64783e0912a21614797fd7.html