6.6×6.9=
6.66×66.9=
6.666×666.9=
6.6666×6666.9=
6.66666×66666.9=
2999.997÷9=
3999.996÷9=
4999.995÷9=
5999.994÷9=
6999.993÷9=
①2.8×1.6+4.2
②2.5×53×0.4
③0.48×0.7+0.52×0.7
④28.6×101-28.6
⑤(8+0.8)×0.125
⑥3.8×0.9+0.38
⑦1.25×25×3.2
⑧6.7+3.3×0.42