小学四年级数学简便运算汇总练习题

1、小学四年级数学简便运算汇总练习题小学四年级数学简便运算汇总练习题527 +199735 198105 X99865 19875 X9868 X99 + 6863 X88 + 88 X3758 X99 + 5825 X49 + 75 X49575 78 2248 X89 +48367 19956 X10275 X48 + 75 X52(20 + 4) X2599 X1132 X(200 + 3)68 X39 + 68239 X10138 X25 X442 X125 X8(25 X125) X8 X478 X125 X8 X3(125 X25) X4127+352+73+489+276+135+3

2、35+204+335+9625+71+75+29 +88243+89+111+57399 + (154 + 201)480 + 325 + 7578+53+47+2291+ 89 + 136+18+64168 + 250 + 3285 + 41 + 15 +5978 + 46 + 154130-46-34263 96 104970 132 68400 185 15472 126 124168 28 72437 137 63244+182+56200 173 27124+68+76263 96 104970 132 68小学四年级数学简便运算汇总练习题88 + 56 + 12178 + 350

3、+ 2256 + 208 + 144400 185 15951-395325-156+675-14444 + 37 + 56189 + 35 + 211 + 16515 X23 X4540 -45 十26 X(15 X9)25 X4464 X64 + 36 X64 a+b =b + a472 126 12419+199+19998+98+998+9998163 + 49 + 26136 X25603+421745-30534+304+3004798+32199999+9999+999+99+9+474 + (137 + 326)249 + 402483 236 64582 157 18265

4、X5 X225 X125 X3235 X225 X(63 X2)540 -36216 + 30525 X3247 + 236 + 64402 + 35943 + 78 + 122 + 25725 X(26 X4)354 + (229 +46)25 X(4 X12)25 X(4+12)99 X99+9949 X99+49小学四年级数学简便运算汇总练习题(a + b) + c= a+ (b + c)286 + 54 + 46 + 4582 + 456 + 544(23 + 56) + 47 axb = b Xa25 X37 X475 X39 X4(a xb) Xc = a X(b Xc)19 X7

5、5 X862 X8 X2565 X11 X4125 X39 X1643 X15 X641 X35 X2(5) aX(b + c) = a xb + a Xc136 X406 + 406 X64702 X123 + 877 X702246 X32 + 34 X492(6) aX(b c) = a xb a Xc102 X59 59 X2456 X25 25 X5643 X126 86 X13101 X897 897 a b c= a (b + c)458 45 1552354 456 54468547 457 123 420 a*b *c = a*(b Xc)4500 -4 -7516800 -

6、8 -25248000 乜-1255200 -4 -65a-b + c= a+ c b42354067 + 7653569 + 526 156945682 7538 + 14318 ab Xc = aXcb(11) a b = a (b + c) + c429 2931587 6898904 129787905 -388(12) a b = a (b c) c2564 30225478 90065024 5021251409(13) a+ b = a + (b + c) c254 + 4895021 + 897654 + 793654 + 4999(14) a + b = a + (b c)

7、+ c124 + 40051235 + 607248 + 8032005 + 456874500 X102 +903600 -80 X2125 -20 X8250 -75 X30(15)254 + 246 + 744 + 10545897 + 568 897 + 43245627 258 742 1627(16)321 X46 92 X27 67 X4675 X32 X12565 X16 X125加法交换律：a + b = b + a乘法交换律:a xb = b Xa加法结合律:(a + b) + c= a+ (b + c)乘法结合律:(a xb) Xc = a X(b Xc)乘法分配律:(a

8、 + b) Xc = a Xc+ b Xc或 a X(b + c) = a xb + a Xc减法的性质:a b c = a (b + c)带着加减号搬家：a b c = a c b a b + c = a+ c b a + b c= a c+ b25 X84125 X16125 X24125 X3256 X125125 X88720 X12548 X12513 X99+1391 X99+9143 X99+4338 X99+38184 X99+18426 X99+2655 X101 5516 X101 1657 X101 5739 X101 39123 X101 123852 X101 852

9、17 X21+83 X21124 X63+124 X3762 X74+38 X7427 X25+13 X2533 X33+67 X3318 X35+2 X35怎么简便怎么算： (23 + 56) + 4725 X277 X4125 X(3 + 8)462 83 1178 X(30 X125)3200 -25 -4 425 38 + 755246 (246 + 694)25 X6 + 25 X4103 X56360 十(18 X 4)32 X105598 + 735540 -45)9 X38 + 3898 X3425 + 75 25 + 7548 X12525 X1225 X1625 X2428 X2532 X25025 X44116 X57+43 X11617 X23 7 X23124 X63 24 X63132 X28 32 X2834 X54 24 X5453 X25 13 X25381 X32 32 X8193 X125 13 X12524 X9999 X2698 X3499 X4599 X3218 X9912 X10133 X103101 X54103 X2362 X10124 X102527 + 199735 198105 X99865 19875 X9868 X99 + 6863 X88 + 88 X3758 X99 + 5825 X49 + 75 X495