Kids practice adding numbers with sums up to 20 and writing the sums on this fruit-themed first grade math worksheet.

Practice addition under 20 with visual models in this useful math worksheet!

Add numbers within 20 using ten frames with this first-grade math worksheet!

Learn a new addition strategy using ten frames in this first-grade math worksheet!

Children are introduced to a new way to add with this base 10 rods worksheet.

Practice finding missing numbers while adding within 20 using ten frames!

Each ten frame has ten boxes. Some boxes have red chips and others don't. If the top half of the ten frame is filled with red chips, how many are left? 10-5=5.

Regroup ones into tens to add in this engaging first-grade worksheet!

Learn a new addition strategy in this essential worksheet!