Phần I
1. B
2. A
3. B
4. C
5. D
6. C
Phần II
Bài 1
`683,95 + 74,58 = 758,53`
`683,95`
+
`74,58`
-------------
`758,53`
`86,97 - 49,386 = 37,584`
`86,97`
-
`49,386`
-------------
`37,584`
` 78,39 × 6,4 = 501,696`
`78,39`
×
`6,4`
---------------
`31356`
`47034`
----------------
`501,696`
`87,5 : 1,75 = 50`
`8750` | `175`
`00 | 50`
` 0|`