1、1六年级数学简便计算练习题 姓名 得分 二、用简便方法计算下面各题。(90 分,42052)1125997 998+1246 4 +3.25 +6.8 12 (1 +2 ) 4001258 25(378)312527( )12 1 2 34(2 ) 1258.8 4.354.253.653.75 3.4993.4416435734117.158.471.53 17 3 4 2 0.1250.2532 22.32.455.34.55659751922( + )72 4.253 (2 1 ) 187.711187.7 43 57.125 0.5 ( ) 12874565438721213415 5
2、7 314 342.42 +4.58 43 6.62.5 4.6+ + +5.4 2.8+ +7.2+ ( + )431212 635 1178 613 123 325635 549 359 445 245 512+2.25+ + + + + + + + 0.75+ + +0.375 5- -438 558734 725457235 53611 164716511 237359 337149147 5814 2141713173 + + + 48.3- - 4.25+ 6 0.6250.5+ + 62.5% +( -1.8)45 945994599945999945 1516456 956 4
3、14 5812 3138 72513 3138 1645 2472.5( + + + ) 22 +2575%-70.75 0.2563.5 2.5- +3.125+ + 1125-996910 910 910 910 34 14 1312 6715 212 4715 389 119178(111+999) 56( - ) 49.5 -(50- )0.6 + + 45( + 0.6) 897 37.5%+104 0.375 3738 1035 12 711 414195519 147 711 79 415 384( 5.375) 3.5 +1.25 +3.8 7199 3755+2996 843
4、9+1001 446+295 888+999 314 538 114 2710 4572156-5672 2532125 70999+709 14. 0.2548 2.5 0.42 299101 563999 37 132 6.6+2.56 75.399+75.3 4.63.7+540.37 0.125 + 8.25+12.5% 8.37-3.25-(1.37+1.75) 210020 12 35 3418511 6 1 15 4.255 19.826.573.43 4.6+3 +6 +5.4 4 +2.25+5 +7 9.632.54 60.2578 13 23 314 34 25 35 3
5、8 58 343 + + 18( + ) 7+ 5 ( )(24 )7125738581562710949562316245( + ) ( + ) 7+ 5 ( )24 ) ( + )( + ) 5747152312316245747152316(32 17)(25 ) (21 21) (99 )9 412543125816971697341105468( ) ( )30 3 4 58 41154321065412651091578181 ( ) 235 - 13518 153 0.653 ( ) 547215462354821535 45 14 73 710710 - - + 25 13.098.124.88 12103450075 ( ) ( )15117191219 119 13 52 310 18 12 35 109 215 311