找朋友(1)21×43;(2)41×22;(3)65×18;(4)32×3;(5)42×16(903)(672)(992)(918)(902)(1170)
计算,能简算的要简算. 3.25×0.45+6.75×0.45 7.5×102 5.64÷0.125÷8 26.9×0.48÷2.695.4×2.5×0.739.5×99+39.5.
怎样简便怎样算. 7.28﹣(0.8+3.28)3.15+1.83+6.85+2.1713.86﹣2.99 13.92﹣(3.92﹣2.74)2.72﹣3.98+5.28﹣2.020.27﹣4.9+4.83+2.9.
计算下面各题,能简算的要简算. 10﹣3.57﹣5.4334.82﹣(3.82+15.2) 5.86﹣0.78+0.22 63.7﹣2.36﹣13.7﹣5.64.
4.5×0.6÷0.03×1.5.
脱式计算,能简便的要简便 57.6÷1.8×0.22.7×20110.85+0.56÷0.28.