Dragon's Treasure: Subtraction Adventure

About this Grade 1 Subtraction Drill

Subtraction is one of the first operations that helps six- and seven-year-olds understand that numbers can shrink, not just grow. When your child subtracts, they're learning to break apart groups, compare quantities, and solve real problems—like figuring out how many cookies remain after eating two, or how many toy blocks are left when a friend takes some away. This skill builds number sense and prepares them for more complex math ahead. At this age, subtraction also strengthens counting backward and one-to-one correspondence, which are critical foundations. Practicing subtraction with small numbers (within 10) helps children visualize the action of "taking away" and develop confidence with arithmetic. These drills give students the repetition and fluency they need to eventually do subtraction facts automatically, freeing up mental energy for harder problems later.

What your student will practice

• Fluently subtract within 10 using fingers, objects, or drawings
• Recognize subtraction symbols and read number sentences aloud
• Solve "take away" word problems with numbers up to 10
• Use subtraction to compare two groups and find the difference

Common mistakes to watch for

The most common error in Grade 1 subtraction is starting from the wrong number. Students often count down from the second number instead of the first—for example, saying 8 − 3 = 4 by counting "3, 4, 5, 6, 7, 8" instead of starting at 8 and counting backward three times. Another frequent mistake is losing track while counting on fingers or using objects, especially when numbers reach 7 or higher. You'll spot this when a child says 6 − 2 = 5, or when they count past their fingers. Encourage them to touch or move each item as they count to stay organized.