Adding with 11 Addition Practice

Adding with 11 Practice Build fluency with adding 11 to any number and extend place value understanding.

Student Tips:

• Think of 11 as 10 + 1, so add 10 first, then add 1 more (8 + 11 = 8 + 10 + 1 = 19).
• For single digits: 11 + 7 = 18 (just put the 7 after the 1, then add 1 more).
• Look for the pattern: 11 makes the tens digit go up by 1 and ones digit go up by 1.

Teaching Instruction: Build on students’ understanding of adding 10 by showing 11 as 10 + 1. Use base-ten blocks with one ten-stick plus one unit. Practice the decomposition strategy and help students see efficient mental math patterns. Connect to the concept that 11 is “one more than 10” and extend place value understanding.