5×= 11×1= ÷4= 9×4.5+4.5= ÷= 1=×27= 5.6+8×1= 8×4= 12÷6= 3﹣1= 5﹣2+=
直接写出得数： 8÷×﹣ 40× 0.5÷2 1.1+ 3﹣150% 2.5÷×1.25÷×15 8×5．
直接写得数． 5÷×16××30×÷11（+）×48
直接写得数÷= 18×=+=××= 1÷50%=×0=﹣= 6×﹣×5=
你能全算对吗？试试看÷=×3=﹣= 6÷=（+）×56=+=×= 1÷5×=
一堆沙石，用去35吨，还剩15吨，剩下的沙石占这堆沙石的几分之几？
= 11×1
= 
÷4= 9×4.5+4.5= 
÷
= 1
=
×27= 5.6+8×1
= 8×4
= 12
÷6= 3
﹣1
= 5﹣2
+
=
×
﹣
40×
0.5÷2
3﹣150% 2.5÷
×1.25÷
×15 8
×5．
×16
×
×30
×
÷11（
+
）×48
÷
= 18×
=
+
=
×
×
=
×0=
﹣
= 6×
﹣
÷
=
×3=
﹣
= 6÷
=（
+
）×56=
+
=
×
= 1÷5×
=
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