问题
填空题
(
|
答案
(
+191919 989898
+190190 980980
)÷19001900 98009800
×19 98
,9898 1919
=(
+19×10101 98×10101
+190×1001 980×1001
)÷1900×10001 9800×10001
×19 98
,98×101 19×101
=(
+19 98
+19 98
)×19 98
×98 19
,98 19
=3×
×19 98
×98 19
,98 19
=
,294 19
=15
;9 19
故答案为:15
.9 19