摘要：45+38= 36-17= 68-29= 100-47-28= 78-39+26= 29+35+14=
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| 40+60=________ | 100-35=________ | 48-28=________ | 52+20=________ |
| 5×7=________ | 35÷8=________ | 35÷9=________ | 9×6=________ |
| 37÷8=________ | 45÷7=________ | 49÷7=________ | 28÷7=________ |
| 24÷6-4=________ | 6×（5-3）=________ | 5×4-6=________ | 38÷6=________ |
| 40÷7=________ | 83÷9=________． |