分数简便运算(1) (1 )1 4741 35 (2 ) 56153 (3 )2 66831 41 3 (4 )2 7)2 7498( (5 )2 0)4152( (6 ) 1 819776 (7 )21311 5121 (8 )61959565 (9 )751754 (1 0 )759575 (11 )92921 67 (1 2)2 32 33 11 72 33 11 4 (1 3 )2 0 1 62 0 1 52 0 1 7 (1 4 )2 0 1 72 0 1 61 9 9 8 (1 5 )1 3 53 41 3 6 (16)513226 (17)815341 (18)135127 (19)247179249175 (20)1981361961311 (21)1381137138137139 (22)1091541431321 (23)19171751531311 (24)721561421301201121 (25)7217-56154213-3011209-127 《巩固练习》 (26) 52 × 214 ×10 (27) 125 × 41 ×24 (28) 69765 (29) 47 ×1522 × 712 (30)59 × 34 +59 × 14 (31) 43 × 52 + 43 ×0.6 (32) 6.8× 51 + 51 ×3.2 (33)( 34 +58 )×32 (34) ( 32 + 43 - 21 )×12 (35)( 94 - 32 )× 83 (36)1113 -1113 ×1333 (37) 257 ×101- 257 (38) 15 + 29 × 310 (39)46× 4544 (40)2008×20062007 (41)36× 937 (42) 345 ×25 (43)214314 (44) 53 × 914 - 94 × 53 (45) 95739574 (46) 12×( 1112 - 348 )17× 916 (47)1819776 (48) 89 × 89 ÷ 89 × 89 分数乘法分配律练习(一) ( 712 - 15 )×60 (183 + 89 )×18 ( 56 - 59 )×185 ( 220 + 15 )× 5 (89 + 427 )×27 6 ×( 218 + 730 ) (2415 - 38 )× 615 16 ×(96 +23 ) (35 +252 )× 25 (924 + 83 )× 124 (207 - 15 )×20 ( 56 - 59 )×18 12×( 724 + 56 + 34 ) 417 ×(34 + 217 ) (15 + 37 )×35 分数乘法分配律(二) 47 × 613 +37 × 613 56 ×59 + 59 × 16 34 ×53 + 34 × 25 2722 ×34 + 527 × 34 613 ×75 - 613 × 25 712 ×6 + 512 × 6 47 × 613 + 37 × 613 833 ×117 ...