摘要： 5+1+2= 6-6+0= 3+3+3= 9-1-6= 8-0-4=
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| 3.9+1.6= | 7.02+2.8= | 8-0.37= | 15.29+4.3= |
| 125×8= | 25×6= | 14×7= | 13×4= |
| 21÷3×4= | 25×4÷5= | 84÷7×8= | 23-9+19= |
| 126-（37-18）= | 36÷（4×9） | （5+7）÷3= | （45+5）÷25= |
| 2.8×0.4= | 10.6-5.2= | 1.92÷0.04= | 3700+643= |
| 0.32×500= | 0.65+4.35= | 150÷0.75= | 3.5×200= |
| 1.5-0.06= | 0.48÷120= | 0.08×1.2= | 70÷500= |
| 0.66+0.27= | 9.8÷1.4= | 0.8×125= | 1.6÷3.2= |
| 531-102= | 1.01×99= | 0.4÷0.08= | 40×5.2= |
| 7.8÷0.1○7.8 | 3.5×7.28○7.28 | 2.7○2.7÷0.8 | 15×0.6○15×1 |
| 3.6÷1.2○3.6 | 0.82×0.99○0.82 | 3.57÷1.05○3.57 | 5.85÷0.9○5.85 |
| 2.75×1.01○2.75 | 4.95÷0.9○4.95 | 1×1.009○1.009 | 3.6×1.45○3.6． |