Add & Subtract to 20 Worksheets
BrainRotU turns grade-1 addition and subtraction facts into a themed equation sheet — the child solves each problem and WRITES the answer, with picture support for Kindergarten and numeral-only missing-addend reasoning for first grade (CCSS 1.OA).
Sample sheets
Shown on ocean — and any other theme your child loves.
Ocean Add & Subtract — Facts to 20 (5–6)
Solve ocean-themed addition and subtraction facts to 20, writing each answer in the box.
How it adapts to your child
Every add & subtract to 20 sheet is generated fresh for your child, not pulled from a fixed set. As they master the level, BrainRotU's adaptive leveling nudges the difficulty up a band; if a sheet comes back too hard, it eases back down — so the worksheet keeps meeting them where they are. Snap a photo when they finish and it grades itself.
Print this one, personalized for your kid
Tell us your child's age and what they love. We generate the worksheet tuned to them — you print it and sit down together with a pencil.
3 free worksheets, no card · then a 30-day free trial · $10/mo after · cancel anytime, effective at the end of your billing period.