2×9.8×1.6=19.6×1.6
=(19.6÷10)×(1.6×10)
=1.96×16
かけ算なら片方を10倍しても、もう片方を÷10すれば積が同じになるはずです
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2×9.8×1.6=19.6×1.6
=(19.6÷10)×(1.6×10)
=1.96×16
かけ算なら片方を10倍しても、もう片方を÷10すれば積が同じになるはずです
Users viewing this question
are also looking at these questions 😉