填空⑴5+( )=14 ⑵4+( )=12 ⑶3+( )=12 ⑷14-5="(" ) ⑸12-4="(" ) ⑹12-3="(" )
9:24=3: =3÷ == %.
:100=15÷ = %==0.25= 折.
3÷ === ÷24≈ (保留两位小数)
÷8=()=0.625= %= .(最后一空填最简整数比)
0.6= :10=18: = %= ÷40=6: = ÷60.