| 3.2+4.57=________ | 407+11.3+5.3=________ | 0.25×(44-8)=________ | 0.9+99×0.9=________ |
| 6.38×8×125%=________ | 10÷0.1-0.1÷10=________ | 7.9×4+2.7=________ | 4-4×0.6=________. |
| 不计算,在横线里填上“<”、“>”、“=”. 48×0.85________48 | 7.85÷1________7.85×1 |
| 135×1.001________135×0.99 | 48÷0.85________48 |
| 0.75÷1.5________0.75÷0.25 | 640×0.8________640÷0.8. |