Common Core Standards Alignment

This worksheet supports the following Common Core State Standards for Mathematics:

• 1.OA.C.6 Add and subtract to 20, working fluently within 10, with strategies like counting on, making ten, fact families and doubles plus one.
• 1.NBT.C.4 Find sums up to 100 (two-digit plus one-digit, or plus a multiple of 10) with models and place value, making a new ten when needed.
• 1.NBT.C.6 Subtract one multiple of 10 from another (between 10 and 90, answer zero or more), such as 70 - 40, using models or place value.
• 2.OA.B.2 Add and subtract to 20 quickly using strategies done in the head, and by year's end instantly recall every sum of two single-digit numbers.
• 2.NBT.B.5 Add and subtract to 100 fluently with place-value strategies, properties of addition, or the link between adding and subtracting.

© Copyright 2010. National Governors Association Center for Best Practices and Council of Chief State School Officers. All rights reserved.