看图写一写，填一填。（ ）个（ ）或（ ）个（ ）算式：_________________口诀：________________
直接写出得数÷3= ×15= 2﹣= ÷= 5÷=
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÷= ÷= ×÷×=
÷3= 
×15= 2﹣
= 
÷
= 5÷
=
= 1÷
= 
÷60%= 
×15= 
=
= 2﹣
= 
=
×13 
×
×
×
÷
×
×
÷
×
÷
÷
÷
÷
÷21．
×
= 
÷6= 
÷
= 1÷
×
= 
﹣
= 
+
= 6÷
=
= 
= 
= 
=
= 
÷
= 0.25×3.2×4= 32×（1﹣0.99）=
÷
×
÷
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