| 84-63÷7=________ | 420×2=________ | 54÷6=________ | 103×4≈________ |
| 25-25×0=________ |  +  =________ | 1-  =________ | 198×5≈________ |
| 50×5= | 110×6= | 81﹣54= | 600×7= |
| 3700+300= | 700+600= | 500+5000= | 465×0= |
| 56÷7= | 49÷5= | 275+0= | 123×2= |
 +  = | 1﹣  = | 102×6≈ | 198×5≈ |
| 25×4=________ | 700×6=________ | 84÷4=________ | 5.8元+2.1元=________ | 72÷(66-58)=________ |
| 42×2=________ | 4000÷8=________ | 240÷6=________ | 7元-5.3元=________ | 55+45÷5=________ |
| A．59×7 | B．57×9 | C．50×7 |
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