三年級上冊數(shù)學(xué)乘法估算練習(xí)400題及答案

第第頁三年級上冊數(shù)學(xué)乘法估算練習(xí)400題及答案估計下列各式的值694×9≈799×4≈209×8≈57×8≈97×6≈209×2≈51×3≈53×6≈499×7≈697×8≈71×6≈709×4≈93×8≈403×6≈804×2≈87×3≈208×5≈202×7≈697×3≈192×7≈101×4≈801×9≈696×5≈406×4≈99×9≈306×6≈901×3≈391×4≈48×3≈898×3≈491×4≈73×3≈191×3≈701×2≈501×3≈703×8≈77×9≈593×8≈704×6≈592×6≈82×9≈506×6≈494×5≈397×6≈793×7≈491×6≈607×5≈305×5≈50×3≈796×2≈59×6≈897×6≈59×5≈604×2≈698×4≈308×3≈63×3≈99×7≈76×8≈908×3≈79×8≈903×4≈97×2≈208×2≈709×2≈704×4≈494×2≈805×8≈66×5≈509×4≈897×2≈603×3≈97×7≈83×4≈506×4≈77×6≈208×3≈78×5≈84×4≈89×5≈94×3≈208×9≈64×5≈87×4≈48×8≈64×9≈297×9≈406×5≈699×4≈499×4≈398×9≈76×2≈101×5≈304×9≈198×5≈702×3≈401×3≈78×3≈792×8≈505×3≈399×3≈202×5≈409×9≈505×5≈804×5≈797×4≈397×8≈796×4≈698×6≈902×7≈392×5≈904×5≈66×6≈56×3≈206×3≈807×5≈903×8≈207×8≈194×3≈602×2≈192×3≈694×6≈699×6≈68×5≈504×5≈304×7≈801×3≈805×3≈801×8≈407×7≈47×9≈599×8≈96×7≈499×2≈67×7≈903×3≈809×8≈68×6≈507×9≈909×5≈394×8≈291×2≈907×4≈597×9≈102×6≈86×6≈201×2≈79×4≈91×9≈596×7≈501×4≈707×4≈799×2≈402×7≈597×6≈701×5≈71×8≈808×9≈895×7≈205×5≈491×3≈84×8≈204×9≈79×3≈495×7≈302×3≈594×2≈87×9≈893×3≈102×3≈58×8≈695×8≈204×6≈201×7≈892×5≈73×6≈893×7≈902×2≈77×3≈605×3≈66×8≈309×3≈103×5≈82×2≈56×5≈891×4≈797×2≈596×4≈506×9≈495×4≈499×3≈691×9≈47×6≈295×4≈78×4≈598×8≈66×4≈56×8≈396×7≈903×9≈比較大小，將>、<、＝填入?內(nèi)。188×9?180051×3?150483×4?2000481×2?1000789×4?3200312×4?120087×4?36083×7?560790×5?400084×6?480596×6?3600282×5?1500794×9?7200314×9?2700913×8?7200508×6?3000407×8?3200882×9?8100491×4?2000406×4?160069×5?350786×2?1600597×6?3600310×9?2700813×7?5600403×9?3600183×9?1800692×3?210066×7?490492×3?1500814×3?2400518×5?250078×9?720295×4?1200210×6?120062×7?42068×5?350707×2?1400886×8?720078×2?160511×4?2000205×3?60096×2?20054×9?450804×2?1600194×2?400898×8?7200409×9?360061×9?540605×2?1200907×2?1800511×5?2500786×3?2400790×8?6400319×9?2700100×5?500785×6?4800881×7?6300902×6?5400702×7?4900598×3?1800910×9?8100298×2?600508×7?350089×8?720385×6?2400505×8?4000906×6?5400601×9?5400701×5?3500894×8?7200884×7?6300886×4?3600899×6?5400388×3?1200913×9?8100801×5?4000504×7?350069×4?280800×5?4000484×6?3000707×6?4200305×9?2700618×8?4800297×6?1800910×5?450092×4?36046×6?30066×2?140416×7?280082×3?240283×6?1800718×5?3500587×3?180062×6?360699×6?420070×5?350602×7?4200590×2?120047×4?200712×2?1400208×9?1800708×3?2100184×3?600285×6?180052×6?300513×7?3500219×6?1200885×8?7200583×2?1200782×3?240093×5?45059×2?120614×4?2400307×5?1500508×4?2000295×3?90091×8?720919×6?5400517×3?1500382×2?800103×8?800485×4?200077×6?480183×7?1400691×5?3500905×4?3600187×3?600682×5?3500714×5?3500293×8?2400795×3?2400885×6?540062×4?240417×8?320079×6?480615×8?4800719×8?5600506×8?4000202×9?1800483×5?2500616×7?4200188×5?1000312×2?600406×8?3200310×7?2100513×2?1000907×4?360068×2?140207×5?1000308×4?1200793×8?6400489×2?1000181×6?1200781×7?560071×5?350302×4?1200301×4?1200590×3?1800197×4?800481×9?4500610×2?1200297×7?2100403×5?2000615×6?3600517×2?1000592×2?1200209×4?800513×3?1500289×3?900382×5?200049×9?450302×8?2400102×7?700290×7?2100581×2?1200402×7?2800184×6?1200692×2?140094×5?450802×9?7200101×4?40067×7?49048×4?200510×2?1000300×3?900799×5?4000611×7?4200311×5?1500912×6?5400692×8?5600798×3?240056×2?120408×4?160089×3?270293×7?2100296×9?2700187×6?1200605×8?4800705×7?4900

三年級上冊數(shù)學(xué)乘法估算練習(xí)400題答案6300320016004806004001503003500560042028007202400160027010001400210014004007200350016009001800270016001502700200021060014001500560072048004200360072030002500240056003000300015001501600360540030012002800900180700640270064036002004001400280010006400350200018001800700320200048060040032045027018003003604005402700200028002000360016050027001000210012002406400150012001000360025004000320032003200420063002000450042018060040007200160060012006004200420035025002100240024006400280045048007001000490270064004204500450032006003600540060054040032081042002000280016002800360035005607200630010001500640180024035009001200810270030048056001200140045004206300180024018005609005001603003600