1.NBT.C.5 Lesson Plans
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."
These lesson plans can help students practice this Common Core State Standards skill.
Lesson Plans
Math Mind Magic
Lesson plan
Math Mind Magic
Every student can be a magician after this lesson in mentally adding and subtracting by 10. No previous magic training required!
1st Grade
Math
Lesson plan
The Ten Monster
Lesson plan
The Ten Monster
Here comes the Ten Monster! Get ready to learn about subtracting tens in this hands-on lesson.
1st Grade
Math
Lesson plan
