การลบบนเส้นจำนวน แผ่นงานสำหรับ ชั้นประถมศึกษาปีที่ 1

Start with a subtraction story, identify the starting quantity, and place a dot on that number. Students then jump left once for each item taken away and read the landing number as the answer. Finish by checking the result with the related addition fact.

Have students complete backward jumps, draw jumps for a given equation, and write the equation shown by a number line. Mixing these representations reveals whether they understand the model rather than merely copying arrows.

Common errors include beginning at the smaller number, moving right, and making one extra jump. A quick routine helps: circle the start, point left, count the arcs, and box the landing number.

Assign the same skill as a printable PDF or host it as a digital quiz on Wayground to suit paper-based, device-based, or remote instruction. Every worksheet has a complete answer key. If students work on paper, the Wayground for Teachers app can scan or capture their submissions for grading.

First graders should be able to start at the minuend, move left the correct number of spaces, and identify the difference. They should also explain that each backward jump reduces the value by one.

Common Core Grade 1 math moves students from acting out subtraction to using drawings, equations, and relationships between addition and subtraction. Number-line jumps support that transition and prepare students to use larger-number strategies in Grade 2.

For students losing their place, provide larger text, wider spacing, and problems with fewer jumps. Students ready for more challenge can fill in an unlabeled number line or show two subtraction equations with the same difference. Digital extended time can support learners who need a slower pace.