问题
解答题
100-98.2-1.8. 8
14.71-5
|
答案
①100-98.2-1.8
=100-(98.2+1.8)
=100-100
=0;
②8
+4.7+13 4
+5.31 4
=(8
+13 4
)+(4.7+5.3)1 4
=10+10
=20;
③14.71-5
-47 8 1 8
=14.71-(5
+47 8
)1 8
=14.71-10
=4.71.
100-98.2-1.8. 8
14.71-5
|
①100-98.2-1.8
=100-(98.2+1.8)
=100-100
=0;
②8
+4.7+13 4
+5.31 4
=(8
+13 4
)+(4.7+5.3)1 4
=10+10
=20;
③14.71-5
-47 8 1 8
=14.71-(5
+47 8
)1 8
=14.71-10
=4.71.