Boofus Quiz-O-Rama | Two-Digit Addition - Adding 10 More Game
Boofus-Quiz-O-Rama - Learn to add 10 to two-digit numbers that are a multiple of 10 and have a zero at the end. To get a high score, select the correct responses.
Common Core Standards
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.
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