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! Mindly's math games for kids make practicing and mastering math a blast.

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.