Fluency doesn't just happen with addition and subtraction strategies and models for teaching the basic facts per Newton, Nicki, Mello, Alison J., Record, Ann Elise

Pagbabawas

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Speed math subtraction & division per Jensen, Paz A. Lacsamana-

Fundamentals of digital subtraction angiography for radiology technologists per Soriao, Renato M.

Subtracting per Patilla, Peter

Addition and subtraction a cognitive perspective

Subtraction drill for levels 1-3 per Mock, Valerie E.

Subtraction per Jones, Graham

A 6-GSamples/s multi-level decision feedback equalizer embedded in a 4-bit time-interleaved pipeline A per Varzaghani, A.

Technology improvements for image-guided and minimally invasive spine procedures. per Cleary, K.