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Math think quickly

7/3 Edited to

... Read moreการฝึกคณิตคิดไว หรือ Mental Math นั้นถือเป็นทักษะที่มีประโยชน์อย่างมากในการใช้ชีวิตประจำวัน ไม่ว่าจะเป็นการคิดเลขอย่างรวดเร็วเมื่อต้องจ่ายเงินที่ร้านค้า, การประมาณยอดค่าใช้จ่าย หรือแม้แต่การช่วยให้เด็กๆ มีพื้นฐานทางคณิตศาสตร์ที่แข็งแรงขึ้น สำหรับผม การเริ่มต้นฝึก Mental Math ก็คือการพยายามจำสูตรลัดหรือเทคนิคการบวกเลขเร็ว เช่น การบวกเลขเบสิคอย่าง 5+6+7+8 หรือการบวกเลขที่ไม่ซับซ้อนมากนัก เพื่อให้คุ้นเคยกับการประมวลผลตัวเลขในใจโดยไม่ต้องใช้เครื่องคิดเลขหรือปากกาและกระดาษ ตัวอย่างเช่น ถ้าถามว่า "What is four plus five?" คำตอบควรจะเป็น 9 แต่ถ้าให้โจทย์ที่มีหลายจำนวนมากขึ้น เช่น 5+6+7+8, การฝึกหัดนี้จะช่วยให้คุณทำได้อย่างรวดเร็วและแม่นยำขึ้นโดยไม่ต้องใช้เวลานาน จากประสบการณ์ส่วนตัว ผมพบว่าเมื่อฝึกคณิตคิดไวอย่างต่อเนื่องแล้ว ทักษะการคำนวณเลขในชีวิตจริงดีขึ้นมาก สามารถแก้ปัญหาเล็กๆ น้อยๆ ได้ทันทีโดยไม่ต้องหยิบเครื่องมือช่วย นอกจากนี้ยังช่วยกระตุ้นสมอง ทำให้เกิดความเฉียบแหลมและเป็นการออกกำลังกายสมองอย่างง่ายๆ ที่ทุกคนสามารถทำได้ทุกวัน อยากแนะนำให้ลองเริ่มต้นจากการบวกเลขในใจง่ายๆ ก่อน แล้วค่อยๆ เพิ่มความซับซ้อนขึ้น เช่น ลองท้าทายตัวเองด้วยการบวกเลขชุดใหญ่ขึ้น หรือการคูณเลขเบื้องต้น แล้วจะรู้เลยว่าคณิตคิดไวเป็นทักษะที่ฝึกฝนได้และสนุกไม่น้อยเลยทีเดียวครับ

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