Subtraction and addition

A guide to understanding subtraction and addition, covering the basic facts and operations, as well as topics such as inverse operations, regrouping, mental math, estimation, word problems, time, money, fractions, and mixed numbers.

Enslow Publishers
2008
9780766028753
book
Lexile: 
590

Holdings

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222238757762762240165967250111SPCMS422SPCJ055290513.2 WIN513.215825759371709307855
302590464828352107165967250111PCS303PCJ0082290513.2 WIN513.216377825731695044385