การลบจำนวนเต็มลบ แผ่นงานสำหรับ ชั้นประถมศึกษาปีที่ 6

Begin with a context such as temperature: if the temperature is 3° and you subtract a change of −4°, you are undoing a drop, so the result rises to 7°. Model the same move on a number line, then write 3 − (−4) = 3 + 4.

A useful sequence is: number-line models, rewriting subtraction as addition, single-step calculations, and short multi-step problems. Mix positive and negative starting values so students learn the structure rather than relying on one sign pattern.

The most common error is changing two signs mechanically without identifying what each sign means. Students may also move left on a number line whenever they see subtraction, overlooking that subtracting a negative reverses the direction. Require a rewritten addition expression before the final answer.

The worksheets are available as printable PDFs and digital activities. Teachers can host one as a Wayground quiz or assign the same practice on paper; every worksheet includes a complete answer key. Paper work can also be captured and graded with the Wayground for Teachers app.

Common Core introduces Grade 6 students to positive and negative numbers through opposites, ordering, and number-line position. Subtracting negative integers extends that foundation and supports later work with all rational-number operations, although teachers may use it as an extension depending on local pacing.

Students commonly begin working with negative numbers in Grade 6 and develop full fluency with integer operations across Grades 6 and 7. A Grade 6 worksheet is most appropriate after students understand opposites and can locate signed numbers on a number line.

Keep number lines visible and reduce the number of sign patterns introduced at once. Wayground’s reduced-answer-choice setting can lower cognitive load, while extended time allows students to rewrite each problem and check its direction before answering.