口算．
0.36+0.14= 7.2﹣5.8= 1﹣0.4= 0.01+0.1= 4.8+3.12=
1﹣0.08= 102×5= 20﹣20÷5= 3.9+4.4+5.1= 4.7﹣0.47﹣1.43=
25×17×4= 120÷5÷2=
口算．
0.36+0.14= 7.2﹣5.8= 1﹣0.4= 0.01+0.1= 4.8+3.12=
1﹣0.08= 102×5= 20﹣20÷5= 3.9+4.4+5.1= 4.7﹣0.47﹣1.43=
25×17×4= 120÷5÷2=
．
+
= 43×200= 1﹣
= 350+50=
+
= 45﹣9×5=
﹣
=
﹣
=
+
=
+
﹣
=
=
﹣
=
+
=
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=
+
=
+
= 1﹣
﹣
=
﹣
=
+
= 1﹣
=
﹣
+
=
=
=
=
=
=
=
= 1 
= 1﹣
=
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