在下面的横线里填上合适的数.
1997600≈________万 | 548609001≈________亿 | 7290000=________万 | 5________8609001≈6亿. |
70+95=________ | 320÷40=________ | 3+=________ | ×18=________ |
1-=________ | +=________ | 4+0.7=________ | 1÷=________ |
×=________ | 2-=________ | 5+=________ | 8÷0.98=________. |
1997600≈________万 | 548609001≈________亿 | 7290000=________万 | 5________8609001≈6亿. |
70+95=________ | 320÷40=________ | 3+=________ | ×18=________ |
1-=________ | +=________ | 4+0.7=________ | 1÷=________ |
×=________ | 2-=________ | 5+=________ | 8÷0.98=________. |