问题
解答题
递等式计算.(能简算的要简算,并写出主要过程) (1)305×10-10034÷29 (2)17
(3)8.53×
(4)(0.9÷
(5)
|
答案
(1)305×10-10034÷29,
=305×10-10034÷29,
=3050-346,
=2704;
(2)17
-6.25-36 17
,3 4
=17
-(6.25+3.75),6 17
=17
-10,6 17
=7
;6 17
(3)8.53×
+11.47÷23 8
,2 3
=8.53×
+11.47×3 8
,3 8
=(8.53+11.47)×
,3 8
=20×
,3 8
=
;15 2
(4)(0.9÷
+43 5
)÷11 2
+32 3
,1 6
=(
+43 2
)÷11 2
+32 3
,1 6
=6×
+33 5
,1 6
=
+318 5
,1 6
=6
;23 30
(5)
×[25 6
-(1 3
+0.2)]÷1 3
,3 5
=
×[25 6
-1 3
-0.2]÷1 3
,3 5
=
×[2-0.2]÷5 6
,3 5
=
×1.8÷5 6
,3 5
=1.5×
,5 3
=2.5.