直接写数对又快.3.5×4= 8.2+2.08= 36÷0.01= 99+1÷10=6﹣2.4×2= 4÷0.5= 2÷25= 0.25×0.4=0.46÷4.6= 0.27÷0.3×0.3= 6.9﹣6.9×0= 7.5×2.5×4=4.3×101﹣4.3= 1÷0.1﹣9×0.1= 37.2×99+37.2= 7.1﹣0.6﹣0.4=
9.81×0.1+0.5×98.1+0.049×981.
灵活计算下面各题 1.25×0.32×250×2009 ﹣÷﹣86×(﹣)×3.
25×12.5×32.
(1)2012× (2)×78+0.5×1.25﹣730÷80 (3)56÷11×165÷7 (4)(﹣)×28+4×7﹣3×7.
计算下列各题,能简便的要简便计算 (+)×15×17 5.66×7.28﹣3.16×3.16﹣3.16×4.12 2012×0.875+201.2×1.25.