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What's the most efficient way to mentally compute basic addition problems?

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Elevating Understanding, One Equation at a Time: Your Path to Mathematical Mastery Begins Here

700 + 200 = 900, then 10 + 80 = 90, then 2 + 1 = 3. 900 + 90 + 3 = 993. Thinking in "hundreds" or "tens" instead of single digits will make it easier to keep track when digits sum to more than ten. For example, for 37 + 45, think "30 + 40 = 70" and "7 + 5 = 12".
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Mentally computing basic addition problems efficiently involves several strategies such as using number pairs that add up to multiples of 10, utilizing the commutative property, breaking numbers into smaller parts, and rounding to make the computation easier. Additionally, visualizing the numbers and...
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Mentally computing basic addition problems efficiently involves several strategies such as using number pairs that add up to multiples of 10, utilizing the commutative property, breaking numbers into smaller parts, and rounding to make the computation easier. Additionally, visualizing the numbers and practicing mental math regularly can significantly improve computational speed and accuracy. read less
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