Max Rescues Dragon Eggs: Addition and Subtraction Quest

About this Grade 1 Mixed Add Subtract Drill

At age 6-7, your child is learning that addition and subtraction are connected operations, not separate skills. Mixed-add-subtract problems—where a single grid contains both + and − symbols—train students to read carefully and choose the right operation for each problem. This is crucial because it moves children beyond memorized facts into genuine mathematical thinking. When a student sees "5 + 2" and then "7 − 3" on the same worksheet, they're building the cognitive flexibility to switch gears mentally. This skill directly supports real-world situations: sharing toys with a friend (addition), then losing some (subtraction), all within the same activity. Students who master mixed operations early develop stronger number sense and are less likely to default to one operation when the context demands another. This foundation makes multi-step word problems in Grade 2 and beyond far more achievable.

What your student will practice

• Accurately identify whether each problem requires addition or subtraction
• Compute sums and differences correctly within 10 and 20
• Demonstrate fluency switching between + and − operations in sequence
• Apply operation understanding to simple word scenarios

Common mistakes to watch for

First graders often ignore the operation symbol and repeatedly add, even when they see a minus sign—this "add everything" habit is the most common error. You'll spot it when a child solves "9 − 2" but writes 11, as if they added instead. Another frequent mistake is reversing the numbers: writing "3 − 5" as "5 − 3" without noticing the order matters. Some children also solve the first problem correctly but forget to switch operations midway through the grid, applying the same operation to every problem. If you see inconsistent answers or notice your child isn't looking at the symbol, that's your signal to slow down and point out each symbol before solving.