Price: 200 points or $2 USD
Subjects: math,mathElementary,baseTen
Grades: 1,2
Description: CCSS.MATH.CONTENT.1.NBT.C.5 Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count; explain the reasoning used. In this deck students can practice adding and subtracting 10 lees and 10 more or 1 less and 1 more than the given number. Students will practice random numbers in this deck from 20 to 100.