张、李、赵3人都从甲地到乙地．上午6时，张、李两人一起从甲地出发，张每小时走5千米，李每小时走4千米．赵上午8时从甲地出发．傍晚6时，赵、张同时达到乙地．那么赵追上李的时间是几时?
直接写出得数= 1÷= ÷60%= ×15= =6.8÷10%= 4.5+= = 2﹣= =
计算75× ×13 × ×× ÷ × ×÷ × ÷ ÷÷ ÷ ÷21．
×= ÷6= ÷= 1÷=×= ﹣= += 6÷=0÷= ×= = =
直接写出得数．18×= ÷= 0.25×3.2×4= 32×（1﹣0.99）=25%×4= 0÷= ÷= ×÷×=
直接写得数72×= 1.25×8= 2.9+6.1= +=÷= ×= 25÷75= ÷=1.2×= 5÷=
= 1÷
= 
÷60%= 
×15= 
=
= 2﹣
= 
=
×13 
×
×
×
÷
×
×
÷
×
÷
÷
÷
÷
÷21．
×
= 
÷6= 
÷
= 1÷
×
= 
﹣
= 
+
= 6÷
=
= 
= 
= 
=
= 
÷
= 0.25×3.2×4= 32×（1﹣0.99）=
÷
×
÷
= 1.25×8= 2.9+6.1= 
+
=
÷
= 
×
= 25÷75= 
÷
=
= 5÷
=
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