问题
解答题
9999×2222+3333×3334 96%×25+7.5×10%+0.25 666.6×888.8÷(4444×33.33)
(1+
|
答案
9999×2222+3333×3334,
=3333×6666+3333×3334,
=3333×(6666+3334),
=3333×10000,
=33330000;
96%×25+7.5×10%+0.25,
=96%×25+25×3%+25×0.01,
=(96%+3%+0.01)×25,
=1×25,
=25;
666.6×888.8÷(4444×33.33),
=(666.6÷33.33)×(888.8÷4444),
=20×0.2,
=4;
+1 2
+1 6
+1 12
+1 20
,1 30
=1-
+1 2
-1 2
+1 3
-1 3
+1 4
-1 4
+1 5
-1 5
,1 6
=1-
,1 6
=
;5 6
(1+
)×(1-1 2
)×(1+1 2
)×(1-1 3
)×…×(1+1 3
)×(1-1 99
)1 99
=
×3 2
×1 2
×4 3
×…×2 3
×100 99 98 99
=
×1 2
,100 99
=
.50 99