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Question

There were 8 birds sitting on a tree. 1 bird flew away. Which of the following equations can be used to find out the number of birds remaining on the tree?

A
1+9=8
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B
8+1=9
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C
81=7
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D
98=1
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Solution

The correct option is C 81=7
Total number of birds =8
Number of birds that flew away =1
Number of remaining birds =81

On a number frame, if we place 8 counters first and remove 1 later, the counters left will be 7.
81=7


Hence, Option A is correct, and there are 7 birds remaining on the tree.

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