Mathematics
Grade-1
Easy
Question
Find the unknown numbers: Find out if these two equations are related to each other.
9 + 
= 17
17 - 9 =
- 8
- 17
- 9
- 6
The correct answer is: 8
The missing number of the first equation, subtract the sum 17 with one of the addend 9,
17 - 9 = 8, the answer is 8
The second equation 17 - 9 = 8, these statements are related to each other.
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