7.6×0.457.6 4.22×1.014.22×0.99
5.16÷0.995.16 2.07÷3.11
2.2×182.2 10.23×0.9910.23 2.3÷0.32.3
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)
0×5.16= 9.8+2.6= 502-399=
÷4= × = 20×5=