问题
解答题
用简便方法计算. 10.25+5.89+0.75+4.11
|
答案
10.25+5.89+0.75+4.11
=(10.25+0.75)+(5.89+4.11),
=11+10,
=22;
÷8+15 17
×2 17 1 8
=
×15 17
+1 8
×2 17
,1 8
=(
+15 17
)×2 17
,1 8
=1×
,1 8
=
.1 8
用简便方法计算. 10.25+5.89+0.75+4.11
|
10.25+5.89+0.75+4.11
=(10.25+0.75)+(5.89+4.11),
=11+10,
=22;
÷8+15 17
×2 17 1 8
=
×15 17
+1 8
×2 17
,1 8
=(
+15 17
)×2 17
,1 8
=1×
,1 8
=
.1 8