Subtract Tens on an Open Number Line

Before handing out the worksheet, briefly introduce the concept with a short oral warm-up or a visual model on the board. Let students work through the first item together as a class, then finish the rest independently or with a partner, encouraging them to talk through their thinking: "What strategy are you using? How do you know that is right?" After completing the worksheet, review any missed problems together and discuss the reasoning rather than just the answer. For extra support, let students use manipulatives or draw pictures alongside the written problems. These subtract whole tens worksheets work well as daily practice, homework, or a focused review activity.

Subtract tens on an open number line, jumping back by 10. On an open number line, mark the start. Jump back 10 for each ten you take away to find the difference. The directions on the page read: Mark the first number on the line. Draw a jump back of 10 for each ten. Then, write the difference. The answer key shows every answer.

Yes, both. We made it for 1st Grade subtraction, and the page works the same whether it lands on a kitchen table or a center rotation. At home, most families go through it together and talk the answers out loud, and that talking is where most of the learning happens with subtract whole tens. In class it runs well as independent work while you pull a small group. Print one copy or thirty, whichever the day needs.

Treat it as a path rather than a picture: your child puts a finger on a number and hops along it, saying each number as they land. Hopping physically is what makes the line make sense. Reading it as a diagram comes much later.

Objects show how many. A number line shows order and distance, which objects cannot. It is the first tool that makes the gap between numbers visible, and it becomes essential for skip counting, comparison, and later for negative numbers and fractions.

It is the classic number line mistake and worth correcting gently. Count the jumps between numbers, not the numbers themselves. Saying "hop" out loud with each move usually fixes it within a session or two.

Students discover that subtracting whole tens works just like subtracting single digits, but in the tens place - 70 − 30 is like 7 − 3 tens, which equals 4 tens (40).

It reinforces that digits in the tens place represent groups of ten, deepening students' place value conceptual knowledge.

CCSS 1.NBT.C.6 requires students to subtract multiples of 10 from multiples of 10 in the range of 10-90.

First graders should subtract within 20 using strategies like counting back, using related addition facts, and making ten (CCSS 1.OA.C.6). They should also understand the relationship between addition and subtraction and solve comparison word problems.

Use number lines and hundred charts to make subtraction visual. Practice fact families (e.g., 3+4=7, 7-4=3) to show how addition and subtraction are connected. Start with subtraction within 10 before moving to larger numbers. Consistent daily practice with worksheets builds confidence.