Horizontal Twenty Addition

Students practice adding twenty to a range of two-digit numbers, all presented in horizontal equation format. The worksheet challenges learners to apply mental math strategies as they adjust the tens place and compute each sum. Repeated exposure builds fluency, accuracy, and comfort with adding multiples of ten. The activity strengthens number-sense skills and deepens understanding of place-value consistency. This worksheet is ideal for assessment, independent practice, or supplemental review.

Curriculum Matched Skills

Mathematics – Addition of Multiples of Ten

Mathematics – Mental Math and Place Value

Mathematics – Addition Within 100

Mathematics – Number Sense and Operations

This worksheet is part of our Adding 10s and 20s Worksheets collection.