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14.8×6.3﹣6.3×6.5+8.3×3.7= .
2.005×390+20.05×41+200.5×2= .
能简算的要简算×7+÷ (+)×56 3÷﹣÷3÷[(+)×] (5﹣﹣)÷.
897×﹣37.5%+104×0.375= .
3.6×+×+×= .
计算:12345×2345+2469×38275= .
下面各题怎样简便怎样算. 11.41﹣(3.41+3.53)﹣4.47=(﹣)×45=0.125×32×2.5=.
观察:3.53=3.5×5+3×3,33.5=3×5+3.5×3,那么:(1)mn=( );(2)若x(2.46)=210,那么x=?
简便运算.578﹣298 3.64÷4+4.36×25% 23.5+99×23.5.
在横线内填上合适的数,使各题能用简便方法计算.10﹣﹣ ÷ +×.
9.99×22.2+33.3×3.34.
(7.88+6.77+5.66)×(9.31+10.98+10)﹣(7.88+6.77+5.66+10)×(9.31+10.98)= .
1997×0.71+11×+2222×0.29= .
简便方法计算:(1)1998+998+98=(2)43+40+39+41+37+42=
99+11×19+11×80 .
试题篮