Published by Liaoning Children's Publishing House, 2013
ISBN 10: 7531559021 ISBN 13: 9787531559023
Seller: liu xing, Nanjing JiangSu, JS, China
paperback. Condition: New. Language:Chinese.I count mental arithmetic (addition and subtraction within 50 operands) Child Rapid Response Training.
Published by Liaoning Children's Publishing House, 2013
ISBN 10: 7531559064 ISBN 13: 9787531559061
Seller: liu xing, Nanjing JiangSu, JS, China
paperback. Condition: New. Paperback. Pub Date :2013-01-01 Pages: 92 Language: Chinese Publisher: Liaoning Children's Publishing House Child Rapid Response Training I count application problems: less than 50 the number of subtraction is designed to develop students' speed calculation. A simple calculation of the ability to fully enhance the overall quality of students' math. Contents: discern write about understanding the singular 50 or less know 50 less than double the number two interesting exercise to compare the si.