Worksheet: Adding Ones to Two-Digit Numbers without Regrouping

In this worksheet, we will practice adding a one-digit number to a two-digit number without crossing a ten and model this with place value equipment.


There are 20 people in a swimming pool. If two more jump in, how many people will be there in the swimming pool?


There should be the same number of blocks on each side of the equal sign. How many blocks should be in the empty square?


There are 34 students playing in the park. Noah, Liam, and James decided to join them. Find the total number of students.


Find the missing number to make the equation correct.


Is 3+60<, = or >6+30?

  • A <
  • B >
  • C =


Find the sum.

Hint: Add the ones then the tens.


Complete the following: =8+90.

  • A98
  • B17
  • C89
  • D18
  • E81

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