一个三位数除以21余17,除以20也余17.这个数最小是多少?
直接写得数 6.3+3.7= 9﹣1.8= 1.4×0.5= 0.49÷0.7= 3.9﹣0.39= 9.2×0.01= 3×0.2×0.5= 0.2÷0.125= 1﹣0.2÷0.2=(1.42+2.91)×0=
0.24+0.56= 6﹣0.32= 0.15×3= 8.4÷4= 0.1÷0.01= 0.028÷4= 0.1×0.1﹣0.01= 0.25×1.3×0.4=
2×5= 4.2﹣1.8= 12.5×8= 3.54×10= 70×50= 2.15+1.85= 0÷0.25= 2÷0.4= 9÷6= 7x﹣2.8x=
口算: 2÷5= 8.8+0.12= 8.8+1.2= 0.36×5= 125×8= 9.7﹣0.97= 1.2×0.5= 9.5÷0.95=
算一算,比一比 1.24+0.56= 0.8﹣0.51= 48×0.2= 3.84÷1.2= 12.4+0.56= 0.08﹣0.056= 0.48×2= 0.384÷0.12=