思维训练---小数的巧算
(1)2.4×7.6+7.6×6.5+7.6+0.76
(2)20.05×39+200.5×4.1+40×10.025
(3)10.08+20.16+30.32+40.64+51.28-8.07-12.15-16.31-20.63-25.27
(4)0.00...0011×0.00...0026=
2020个0 2020个0
(5)2.4×7.6+7.6×6.5+7.6+0.7
(6)20.05×39+200.5×4.1+40×10.025
(7)2018×0.375-0.375×1962+3.75×2.4
(8)10.08+20.16+30.32+40.64+51.28-8.07-12.15-16.31-20.63-25.27 (9)
(10)比较下面两个乘积A,B的大小:
A=9.8732×7.2345
B=9.8733×7.2344