Welcome to Math Quiz #9070
Mentally add 10 to or subtract 10 from a number between 100 and 900
There are 10 problems in this quiz which support the following standard:
CCSS.Math.Content.2.NBT.B.8. Mentally add 10 or 100 to a given number 100-900, and mentally subtract 10 or 100 from a given number 100-900.
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