How much is the second grade math 23×9?

Mathematics 23×9 in Senior Two is about equal to 200 (integer hundred) and 2 10 (integer ten). This is an estimation problem in Grade Two. The estimated product is between 230 and 180 (23x10 = 230.20x9 =180), which is the closest to 2 10(23x9=207 is close to 2 10).

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