Desert Adventure: Add to Find Hidden Treasure

About this Grade 2 Addition Drill

Addition is one of the cornerstone skills your second grader needs to build a strong math foundation. At ages 7-8, children are developing the ability to mentally manipulate numbers and understand that combining groups creates larger quantities—a concept they'll use throughout their lives, from sharing snacks with friends to calculating allowance. This stage is crucial because students are moving beyond counting on their fingers and beginning to recognize number patterns and relationships. Mastering two-digit addition with regrouping (sometimes called "carrying") opens the door to multiplication, money problems, and real-world problem-solving. When children practice addition drills, they're strengthening their number sense, building automaticity with basic facts, and developing the confidence they need to tackle more complex math. The repetition and variety in a structured grid helps cement these facts into long-term memory, so they become quick and accurate—just as automatic as recalling their own phone number.

What your student will practice

• Add two-digit numbers with and without regrouping fluently
• Recognize and use the commutative property (4+5 equals 5+4)
• Solve word problems requiring two single-digit or two-digit addition
• Apply addition strategies (counting on, tens frames, number lines) flexibly

Common mistakes to watch for

Many second graders forget to regroup when the ones column adds up to 10 or more—for example, 17+15 becomes 22 instead of 32 because they write down 12 in the ones place without carrying the 1 to the tens. Others reverse digits after regrouping or lose track of place value entirely, treating 24+13 as if the numbers don't have tens and ones. Watch for students who are still counting on their fingers for every problem; this signals they haven't internalized basic facts yet. If a child consistently makes the same error (like always forgetting to carry), it's not carelessness—it's a gap in understanding place value that needs explicit reteaching before moving forward.