2.01-1.9=
412÷2=
3072-288=
0.18÷0.3=
①8:3=24:x ② ③
475-298= 1-0.09= 0.22= 1÷ × = ÷3+ × =
3.3+7= 16÷0.8= - = 4×4÷ = ( + )×24=
= x:32=:21 70%:x=1.2:0.6
4500:90= 9.99×10.01≈ 2﹣0.79= 2.4×25=
﹣ = × = ÷ = 0.3× ÷0.3× =
15.1-3.5+6.5= 8× ÷8× = 4203÷59≈ 0.42-0.32=
18××= 4÷-÷4= 3.6÷2×5= +0.2=
① + = ② × = ③ - = ④ ÷ = ⑤3.2-1.57+6.8=
⑥1.92÷0.6= ⑦39×99= ⑧1421÷69≈ ⑨4.5×0.04= ⑩6+3÷ =
4.6×0.32= 91.2÷7.6= 78.6÷11=(商用循环小数表示)