问题
解答题
[
3.5×0.782÷(2.2-1.97) (0.25+0.7)÷0.25×250% 1001-9036÷18. |
答案
(1)[
×(4 7
-0.25)+3 5
]÷3 10
,1 2
=[
×4 7
+7 20
]÷3 10
,1 2
=[
+2 10
]÷3 10
,1 2
=
÷1 2
,1 2
=1;
(2)3.5×0.782÷(2.2-1.97),
=3.5×0.782÷0.23,
=2.737÷0.23,
=11.9;
(3)(0.25+0.7)÷0.25×250%,
=0.95÷0.25×250%,
=3.8×2.5,
=9.5;
(4)1001-9036÷18,
=1001-502,
=499.