问题
解答题
脱式计算,能简算的要简算:
|
答案
(1)46.5×99+46.5
=46.5×(99+1)
=46.5×100
=4650
(2)12.5÷2.5÷0.4
=12.5÷(2.5×0.4)
=12.5÷1
=12.5
(3)2.6×1.9÷2.6×1.9
=2.6÷2.6×1.9×1.9
=1×1.9×1.9
=3.61
(4)(7.7+1.54)÷0.7
=9.24÷0.7
=13.2
(5)10.8÷[(4.62-1.92)×4]
=10.8÷[2.7×4]
=10.8÷10.8
=1
(6)2.6×(2.139÷9.3×6.2)
=2.6×(0.23×6.2)
=2.6×1.426
=3.7076