Standards:
Add within 100, including adding a two-digit number and a one-digit number, and adding a two-digit number and a multiple of 10, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method and explain the reasoning used. Understand that in adding two-digit numbers, one adds tens and tens, ones and ones; and sometimes it is necessary to compose a ten. (1.NBT.4.)
Student Instructions
1. Use the to solve each problem. Show your thinking by drawing quick tens and ones.
~Remember to show each part in your drawing!~
2. Tap the green to turn in your work.
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to solve each problem. Show your thinking by drawing quick tens and ones.
~Remember to show each part in your drawing!~
2. Tap the green 
to turn in your work.
