Use these cards for quick, fun practice adding and subtracting 1, 10, or 100 to three-digit numbers.
There are 24 cards in this set. Pass the cards out to students (Some students may need to share cards or have more than one card). The student with the card stating, “I will start” reads his card first. Whoever has the answer to that card reads the answer on his card and then reads his question. Students continue until all cards have been read. Time students, and have them try to beat their time. This is a favorite in our class.
**Please note that this is a challenging set for second graders. **
It is aligned to the Common Core standards (NBT 2.0.8 Mentally add 10 or 100 to a given number 100–900, and mentally subtract 10 or 100 from a given number 100–900.)
©SC2 Teacher 2013