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This is unit 4C in a four-unit series for fourth grade
This is unit 4D in a four-unit series for fourth grade
counting items
the book contains over 650 problems
Singapore Math: Primary Math Workbook 2A Common Core Edition US Edition This is unit 4C inSingapore Math Primary Mathematics: Common Core Edition books have been updated where necessary to align with the CCSS. However, this does not mean that the content has been reduced in its level of difficulty. If CCSS called for content to be introduced at a later level, Singapore Math didn't move content from the earlier level, but rather simply revisits it more in depth at the CCSS level. Singapore Math's Primary Mathematics workbooks are consumable