0.36÷12= ×= 10×1.05= ÷9= 84÷0.7=5﹣2.4= 8×= 4.37+6.63= 5÷25%= ×=+= 7÷1.4= 72.8÷0.8= ﹣= 16×0.001=(+)×20= 1.25××8= 8.2+0.54+0.46= 1÷﹣1.25= 125×0.8﹣100=
判断,并改正.
80÷20= 87÷40= 72÷30=
估一估,算一算.
一批白糖共585千克.