钟面上两个数之间为一大格,时针走一大格是 小时,分针走一大格是 分,秒针走一大格是 秒.
× =+ = ÷= :5= ×0.35=1.
9: == ÷32=.
= ÷ = %= (小数)= : .
÷15=1.2: == %= (填成数).
: =0.75= ÷24=.