三年级简便计算题

一、脱式计算。 408-12x24 4628 x6042x50-1715-5 32105-510847x52 420 x 327-238 41212389-7671x15-974469x121492405x3213-3189 5000-56x23125x97-816942480-3304x32-1542080-4-20 100-- 32-30 x025x4-12x5 70 x〔 42-42 -18 75x6575x35 280840-24x5 85x95-1440-24 58870-10520 x2 80400-4300870-15 1437x2727x563 125x33-1 37.4-8.67.24-6.6 二、乘法计算 乘法交换律和乘法结合律的运用a X bbXa 乘法分配律的灵活运用 aX bc aXb aXc 125X32X8 4X60X50X8 aXbXc aX bXc a-b 12X4X25 XcaXc- aXc 25X125X8X4 25X17X40 19X8X125 25X16X25 125X56 25X24 25X44 125X32 25X4817X4X25 25X33X40 123X47177X47 57X1523X15125X32-24X125 173X61-73X61 52X14-22X14 95X4646X597X360 3X360 72426X24724 528X6-6X128 84x101504x25 78x102 25x20499x6499x16 67X967865X9986599X1313 638x99 72x101-72 112x98 25399X25 101x32-32382x101-382 35x835x6-4x35 35X127-35X16-11X3583X108-83-83X7 87X23-23X6-23x19 99x999944 x5288x24111x36888x881791x9455x95 997x721103x8-242008x25125x792 三、除法计算 除法的性质a-r b4-ca-r b Xc 18004-54-272004-454-236004-254-481004-44-7530004-1254-8 12504-254-564004-64X1063004-63X581004-814-5 72004-180 四、小数的加减法 5.851.892.15 24.814.615.4 5.85-1.75-0.2512.45-1.35-0.65 21.32- 6.328.3 27.373.272.7 42.5-22.17-7.83 3.81.376.212.63 15.2828.99 20.72 6.53.14.5 1、口算。 1 3050 2 2070 3 4010 4 705 5 4X3 6 1X1 7 2X4 8 4X2 9 3624 10 59-18 11 79-15 12 4238 13 4X22 14 3X36 15 492 16 766 17 3X25 18 4X3-4 19 3X4-6 20 6X6-6 21 5X3 22 5X5 23 4720 24 87-40 25 78 26 20-9 27 3624 28 4X6 29 54-0 30 34-19 31 3X6 32 5X6 33 4X6 34 20-6 35 3X3 36 64-2 37 124-2 38 104-5 39 94-3 40 54-5 41 54-1 42 3046 43 6X4 44 244-4 45 6X7 46 74-1 47 74-7 48 7X67 49 7X44 50 494-7 51 354-5 52 284-4 53 424-7 54 7X7 55 144-7 56 74-1 57 7X8 58 564-7 59 16-8 60 644-8 61 7X8 62 484-6 63 204-8 65 9X4 67 544-6 69 8X5 71 364-4 73 284-7X3 75 9X44-6 77 124-64-2 79 244-4X9 81 654-7 83 824-9 85 674-7 87 1827 89 29-29 91 679 93 84-8 95 34 X6 97 8X75 99 5X83 64 304-9 66 8X9 68 454-9 70 2X8 72 164-8 74 4X2X3 76 54-5X9 78 3X84-6 80 124-438 82 714-9 84 574-7 86 94-9 88 100-30 90 80-25 92 846 94 72-2210 96 24-4X3 98 3X49 100 9X66