问题
填空题
已知10m=2,10n=3,则103m+2n= 42005×0.252006=
答案
72 ,0.25
解:103m+2n=103m102n=(10m)3(10n)2=23•32=8×9=72.
解:42005×0.252006,
=42005×0.252005×0.25,
=(4×0.25)2005×0.25,
=0.25.
故答案为:0.25
已知10m=2,10n=3,则103m+2n= 42005×0.252006=
72 ,0.25
解:103m+2n=103m102n=(10m)3(10n)2=23•32=8×9=72.
解:42005×0.252006,
=42005×0.252005×0.25,
=(4×0.25)2005×0.25,
=0.25.
故答案为:0.25