直接写出得数①= ②= ③= ④=⑤= ⑥= ⑦= ⑧=
在如图中表示+．
直接写出得数．= = 1﹣= == = 1﹣= =
直接写出得数.﹣= 0.12+= 8﹣8= 1+2.1﹣1.25=2﹣= 1.2+= 1++= 3+0.25﹣3+0.25=
直接写出得数．= = = == = = =
= ②
= ③
= ④
=
= ⑥
= ⑦
= ⑧
=
+
．
= 
= 1﹣
= 
=
= 
= 1﹣
= 
=
﹣
= 0.12+
= 8
﹣8= 1
+2.1﹣1.25=
= 1.2+
= 1+
+
= 3
= 
= 
= 
=
= 
= 
= 
=
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