2.5×4=
3.6÷4=
6.3+3.7=
1-0.8=
8×12.5=
36.36÷9=
每分走的步数÷步长=160(步长的单位:m)
2÷9.9=
3÷9.9=
6÷9.9=
7÷ 9.9=
37.037×12=
88.83÷9=
88.884÷9=
=
88.88886÷=
88.888887÷=
①3.6+5.4= ②6.7-3.8= ③0.8÷2= ④6×2.5=
⑤102×25= ⑥ = ⑦3- = ⑧ =
×8= 1-0× =
599÷6≈ 52-32= 0.75÷15=
68×51≈