算一算．
| ⑴ |
⑵ |
⑶ |
⑷ |
 ﹣ = |
 ﹣ = |
  = |
 + = |
| ⑸ |
⑹ |
⑺ |
⑻ |
1﹣ = |
 ﹣= |
 + = |
 += |
算一算．
| ⑴ |
⑵ |
⑶ |
⑷ |
| ﹣= |
﹣= |
= |
+= |
| ⑸ |
⑹ |
⑺ |
⑻ |
| 1﹣= |
﹣= |
+= |
+= |
试题篮
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