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- Mathematical estimation in the second volume of primary school grade 719+299 486-149 9765-461873-597 908-688.
Mathematical estimation in the second volume of primary school grade 719+299 486-149 9765-461873-597 908-688.
7 19+299≈ 1000
486- 149≈400
9765-46 1≈9300
873-597 ≈300
908-688≈200
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I am in the fourth grade.
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