1、四年级数学下册简便计算专项练习题23821282882125(86)8787398015858752925294410125(40+4)573115732892872125571717157125(88)3030591001676790441044139925(20+4)553101553829998272125391343439125(84)78781980138385697449724100125(32+4)37611376319993148125501646450125(88)4747992014444645136517099925(32+4)5231001523349934322576
2、1272776125(86)363659801333319778177339925(12+4)42810014287199714025251585825125(84)9292196012323233577354210125(4+4)1411011412899285625321202032125(82)1717697013939769324932499925(4+4)48210148241994116125711686871125(82)4747796017575417159717799925(28+4)2591125967996780125871828287125(88)95956940138
3、388475167549100125(20+4)334101334549995464125901828290125(86)4949191001939343865786559925(8+4)57111571399993924125611212161125(84)888859100153533149714599925(20+4)39210139240999402425971191997125(88)9090998014242892311239799925(32+4)532101532639638125161868616125(86)37376980163633664646472100125(40+
4、4)3001130028992880125991858599125(88)616195018282598959856100125(20+4)3221001322279992732125411343441125(84)26261930186863571657146100125(16+4)336113367499743225851292985125(810)9292696018888838617867599925(12+4)3931001393209992048125821373782125(84)3333891018181397761772810125(4+4)131100113188998856125201646420125(88)969679401979742396236599925(24+4)355100135574997440125821282882125(86)9090598016060195181515710125(8+4)4881001488669996680125831666683125(84)222289601111196494499099925(24+4)1801011801399131625