植树节到了，三（一）班同学在老师的带领下积极参加，三（一）班一共42人，平均每人植树13棵，三（一）班同学一共植树多少棵？
直接写得数= == =80×1.25%= 121÷11=0.24×5= 18÷25%=（）×12= =
直接写出得数．÷= ×= 1.8×= ÷3=3.2﹣= += 10÷10%= 6.8×80=
直接写出得数：×3= ÷4= +4= （）3= ×=÷= ÷26= ﹣=
直接写得数1÷= 0÷= += ﹣=2﹣= ×= 20%÷= ×30%=3.5+1.5= 0.5×=
直接写出得数÷= ×= ×= ÷=﹣= ÷6= 0.64×= +=+= 18﹣= 1÷= 75%÷3=
= 
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= 1.8×
= 
÷3=
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+
×3= 
÷4= 
+4= （
）3= 
×
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÷
÷26= 
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= 0÷
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﹣
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×
×30%=
=
÷
= 
×
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×
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﹣
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÷6= 0.64×
= 
+
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= 18﹣
= 1÷
= 75%÷3=
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