两三位数乘一位数的测试题

两三位数乘一位数的测试题TwotothreedigitmultiplicationbyonedigittestquestionsI.Fillintheblanks:1.Theproductofathree-digitnumberandaone-digitnumbermayhave()digitsor()digits.Theproductofatwo-digitnumberandaone-digitnumbermayhave()digitsor()digits.2.Theproductof480and5has()attheend;theproductof405and5has()inthemiddle.3.Onefactoris104,theotherfactoris8,theproductis().4.Multiplyinganynumberby()givesthesamenumber;theproductof203and5is().5.Theproductofthelargestthree-digitnumberandthesmallestone-digitnumberis().6.183times9is();8times194is().II.Fillinthecirclewith>,<,or=:24×5()240+0160×()160-0420×6()42×60+23()23×1252×6×()×1×365708×3()780×312×5()62123()124×2III.Multiple-choicequestions:1.Theproductof320and5has()attheend.①1②2③32.Whenmultiplying435by(),theproductisalwaysafour-digitnumber.①1②2③33.Whatis8times125?Theequationis()①125+8②125-8③125×84.162×4()356×5①<②>③=4.Inamultiplicationproblemwhereonefactorisaone-digitnumber,youshouldstartfrom()digit.①ones②tens③hundredsV.Trueorfalse:(1)Multiplyingby3isalwayssmallerthanmultiplyingby7.()(2)Multiplyinganumberby1isalwaysgreaterthanthenumberitself.()(3)Theproductofathree-digitnumberisalwaysathree-digitnumber.()(4)Addinganon-zeronumberalwaysresultsinalargernumberthanmultiplyingthesamenumber.()(5)Thesumoffour90splus40is400.()(6)Theproductofafactorhasatleastasmanydigitsattheendasthefactoritself.()VI.Solvethefollowing:121×3≈518×2≈878×6≈409×5≈217×3≈79×6≈121×4≈53×6≈VII.Calculateusingverticalform:146