Add Twenty Practice Answer Key

This worksheet focuses on adding twenty to two-digit numbers using vertical equations. Students observe how adding twenty increases the tens digit by two while keeping the ones digit the same, strengthening place-value reasoning. The repeated practice helps learners understand the consistent number patterns produced by adding multiples of ten. Students also develop stronger mental computation skills as they recognize predictable results in each equation. The structured layout supports neat organization and accurate calculation. This worksheet is ideal for reinforcing fluency with multi-digit addition.

Curriculum Matched Skills

Mathematics – Adding Multiples of Ten

Mathematics – Place Value: Tens and Ones

Mathematics – Addition Operations Within 100

Mathematics – Patterns in Base-Ten System

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