Subtraction / 
Joseph Midthun, Samuel Hiti. 
 - Chicago :  World Book, a Scott Fetzer Company,  2013 
 - 32 pages :  color illustrations ;  27 cm. 
 - Building blocks of mathematics .
<br/><br/>Includes bibliographical references and index. 
<br/><br/>What is subtraction? -- Counting back -- Regrouping -- Number lines -- Using doubles -- An unknown change -- Counting back, counting up -- Matching and counting up -- Subtraction all around. 
<br/><br/> "A graphic nonfiction volume that introduces critical basic subtraction concepts"-- 
<br/><br/> 5-11. 
<br/><br/><label>ISBN: </label>9780716614371 0716614375 9780716614784 0716614782 9780716614319 0716614316 
<br/><br/><label>LCCN: </label>2012031040 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Subtraction--Comic books, strips, etc.<br/>Graphic novels.
<br/><br/><label>Index Terms--Genre/Form: </label>
<br/><br/><label>LC Class. No.: </label>QA115  / .S856 2013 
<br/><br/><label>Dewey Class. No.: </label>j513.212 Sub   25