问题 解答题
脱式计算,能简算的要简算:
46.5×99+46.512.5÷2.5÷0.4 2.6×1.9÷2.6×1.9
(7.7+1.54)÷0.7  10.8÷[(4.62-1.92)×4]2.6×(2.139÷9.3×6.2)
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

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