x+1.5x=12
2x-1.5×0.8=1.4
17.2+2.8=
0.6×0.9=
8÷0.8=
0.25a+0.5a=
123÷100=
0.74×100=
2.7÷3=
3-1.48=
0.25a+0.05×2=
2x+5=17 3(x-2)=12
①2.5x+2.6= 15.1
②
③4n+25×6=218
22=+=+=×
我写的算式是:□×□和□×□。
÷= ×= 1.02﹣0.43= 597×8≈
126÷3= 0.25×0.8= 1÷25%= 725÷92≈