请你替老板想一想,应该接手这块广告牌吗?为什么?
口算. 3.5﹣1.7= 54÷100= 6.4+3.6= 0.4+0.12= 1.25+0.6= 3.8×10= 425÷10= 0.07×100= 10﹣2.5=
口算: 0.4×0.02= 3.2+6.8= 0.39÷1.3= 2.4×2.5= 1÷0.125= 1﹣0.25= 0.62÷0.1= 99×0.25= 1.2×0.4+0.4×1.3= 4×(1.5+0.25)=
估算下面各题. 4.03×1.98≈ 3.95×0.2≈ 8.1×10.01≈ 16.2÷1.9≈ 59.8÷3.1≈ 10.32÷0.21≈ 99.9÷0.5≈ 70.2×3.02≈
估算. 3.75×2.8≈ 96.2÷0.26≈ 6.27÷1.9≈
口算. 450÷9×5= 3.7÷100= 1﹣0.09= 6+6÷6×0= 4.3×1000= 363+3.66= 35+24﹣12= 9.9﹣(7.9﹣1.8)= 0.35÷10= 0.38+1.2= 26+78÷13= 24×5÷24×5=