问题
解答题
脱式计算.(能简算的用简算)
|
答案
(1)3.47×6.5+6.53×6.5,
=(3.47+6.53)×6.5,
=10×6.5,
=65;
(2)86.3×19-86.3×9,
=86.3×(19-9),
=86.3×10,
=863;
(3)66.96÷72-0.87,
=0.93-0.97,
=0.06.
脱式计算.(能简算的用简算)
|
(1)3.47×6.5+6.53×6.5,
=(3.47+6.53)×6.5,
=10×6.5,
=65;
(2)86.3×19-86.3×9,
=86.3×(19-9),
=86.3×10,
=863;
(3)66.96÷72-0.87,
=0.93-0.97,
=0.06.