直接写得数+= += 1﹣= += +=﹣= ++= 9.2×0.25×4= 0.8×25﹣10= 5÷8=
李老师把米长的木棒锯成相等的若干段做学具，共锯了4次，每段长多少米？
直接写出得数．= = = 5.6÷4=3.4﹣8= = = =
直接写数对又快：1÷= += ÷= （﹣）×18=÷3= ×= ﹣= ×÷×=
5.8+3= ×= 6÷= 1÷﹣÷1= 2×10= 1÷3=0.66÷= 1÷1+= 9÷3= 1÷0.8= 5.4×= ×0.7+0.3=
直接写出得数．×1.2= 1÷2= 1.8÷= ×÷×=（+﹣）×12= 3﹣÷0.75= 24÷8= 4÷﹣÷4=
+
= 
+
= 1﹣
= 
+
= 
+
=
﹣
= 
+
+
= 9.2×0.25×4= 0.8×25﹣10= 5÷8=
米长的木棒锯成相等的若干段做学具，共锯了4次，每段长多少米？
= 
= 
= 5.6÷4=
= 
= 
=
= 
+
= 
÷
= （
﹣
）×18=
×
= 
﹣
= 
×
÷
= 
×
= 6÷
= 1÷
÷1= 2
=
= 1
÷1+
÷3= 1
÷0.8= 5.4×
= 
×0.7+0.3=
×1.2= 1÷2
= 1.8÷
= 
×
÷
=
+
）×12= 3﹣
÷0.75= 24
÷8= 4÷
﹣
÷4=
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