5.02×3.6=
46.92÷2.3=
0.83×4.7≈(得数保留两位小数)
1.5÷99=(用循环小数表示商)
8x-4×14=0 1.2x-0.9x=8.7
3×0.16=
1.25×0.8=
1.2÷4=
0.25×0.13×40=
1.68÷0.3=
4.1+9=
21.21÷7=
0.4×0.3÷0.4×0.3=
3,6,9,15,24,,63,