估算:
|
(1)5394 ÷9≈ |
(2)359 ÷6≈ |
估算:
|
(1)697 ×4≈ |
(2)478 ÷8≈ |
估算:
|
(1)294 ×3≈ |
(2)789 ×8≈ |
用竖式计算.
|
(1)720 ×18= |
验算: |
|
(2)792 ÷44= |
验算: |
估算:
|
(1)5394 ÷9≈ |
(2)359 ÷6≈ |
估算:
|
(1)697 ×4≈ |
(2)478 ÷8≈ |
估算:
|
(1)294 ×3≈ |
(2)789 ×8≈ |
用竖式计算.
|
(1)720 ×18= |
验算: |
|
(2)792 ÷44= |
验算: |