2.NOS.C.10: Mentally add and subtract 10 or 100 to a given number 100-900.

Mentally add and subtract 10 or 100 to a given number 100-900.

Example Problems

Round

\text{75}

to the nearest ten.

Round

\text{62}

to the nearest ten.

Round

\text{999}

to the nearest ten.

1-on-1 AI tutoring aligned to 2.NOS.C.10. Instant help for students, real-time insights for teachers.

Used in classrooms by 100,000+ students at Baltimore County, Plano ISD, Deer Valley USD, KIPP, and districts nationwide.