直接写得数．×= += ÷2= ×5÷×5=0.42×0.01%= 0.561×100= 9.3×7.9≈ （ ）×0.5=1．
直接写出得数．（2+）×5= 100÷100×4﹣0= 5.8×101=3÷= 1÷0.01+1÷0.01= 6﹣+=
直接写出得数20×500= 2÷7= 10﹣0.95= 0.48÷0.12=1.2÷67= 34+13= 123×15= 2﹣67=176+99= 1÷12﹣12÷1=
70÷23===0.2×0.5=0.25×8=
直接写出得数：10×12= 1﹣0.04= 2+5.8= 4.5÷0.45=+= 1.2﹣= ÷= 2.5×4÷4=+÷+= 0÷（﹣）=
40×27=2﹣=×2=1÷=5.6+3.99=
×
= 
+
= 
÷2= 
×5÷
）×5= 100÷100×4﹣0= 5.8×101=
= 1÷0.01+1÷0.01= 6﹣
+
=
=
=
+
= 1.2﹣
= 
÷
= 2.5×4÷4=
+
÷
+
= 0÷（
﹣
）=
=
×2=
=
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