46 53 69 + 2 + 1 + 6 72 84 97 + 9 + 7 + 2 11 22 37 + 2 + 9 + 9 42 53 67 + 3 + 8 + 2 71 85 96 + 1 + 8 + 4 17 22 36 + 9 + 2 + 5 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.
46 + 2 53 + 1 69 + 6 72 + 9 84 + 7 97 + 2 11 + 2 22 + 9 37 + 9 42 + 3 53 + 8 67 + 2 71 + 1 85 + 8 96 + 4 17 + 9 22 + 2 36 + 5 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.