1.1+9.9= 5.89-0.11= 0.15×0.3= n+3n=
4.3+5= 4.2×100 = 9.8-3.8= 52.6÷100=
125×8 = 5.6-0.5= 3.2+4.5= 450÷50=
21.52-13.37 30.66+3.4 7.01-0.487
540÷90= 60×700= 37+73= 3×27= 42-12×3=
810-90= 24×50= 7×15= 42÷3= 15×4÷15×4=
124-52= 5.2+6.7= 0÷260+51= 88×99×0=
125×8= 320÷40= 20×(34+16)= 5.1÷10×1000=
0.05+0.5= 6.4+0.6= 0.125×100=
1-0.44= 5.61-5.6= 9÷1000=
4×25÷25×4= 3.5+6.5×10=
0.080.11 0.30.29
0.040.4 0.180.22
①600﹣300÷20×5
②(4.8﹣3.8÷2)×0.3
③3.45×99×2+6.9
④(8+ )÷4
⑤ ÷9+ ×
⑥ ÷[ ×( - )]