Young Scientists Subtract Slime in the Lab

About this Grade 1 Subtraction Drill

Subtraction is one of the first big mathematical ideas your child will master, and it's foundational for almost everything that comes next in math. At ages 6 and 7, students are naturally curious about separating, removing, and comparing—just like young scientists testing what happens when they take things apart. Learning subtraction helps children understand that numbers can become smaller, that objects can be taken away, and that math describes real events in their daily lives, like eating cookies from a plate or giving away toys. This worksheet builds number sense, prepares students for multi-digit subtraction in second grade, and strengthens their ability to visualize and count backward—skills that develop critical thinking and problem-solving abilities. Subtraction also ties directly to addition, helping children see how numbers relate to each other in deeper ways.

What your student will practice

• Solve subtraction facts within 10 using objects or drawings
• Count backward from a given number to find the difference
• Recognize and use the minus symbol and equals sign correctly
• Apply subtraction to simple real-world scenarios and story problems

Common mistakes to watch for

Many Grade 1 students count down incorrectly—they start counting from the original number instead of stopping at it. For example, with 7 – 3, they'll count "7, 6, 5, 4" and say 4, when they should count only 3 steps backward to land on 4. Another common error is reversing the numbers; a child might solve 5 – 2 as 2 – 5 without realizing order matters in subtraction. Watch for students who use their fingers to count down but lose track halfway through, or who confuse the minus sign with the plus sign.