Boofus Quiz-O-Rama | Adding 10 and 100 Game
Boofus Quiz-O-Rama - Adding 10 and 100 to three-digit numbers will help your child to develop number sense and understand place value. Click on the correct answers to get the highest score!
Common Core Standards
Mentally add 10 or 100 to a given number 100-900, and mentally subtract 10 or 100 from a given number 100-900.
Fluently add and subtract within 1000 using strategies and algorithms based on place value, properties of operations, and/or the relationship between addition and subtraction.