This document provides 10 problems involving adding and subtracting monomials and polynomials. The problems direct the reader to calculate the sum or difference of monomial or polynomial expressions such as 5xy + 7xy - 3xy or 18p3q4 - (-5p3q4) + 10p3q4. The document lists the problems without showing the step-by-step work or final answers.

1. ใบงานที่ 1 เรื่อง การบวกลบเอกนาม
ผลการเรียนรู้ข้อที่ 4 หาผลบวกและผลลบของเอกนามและพหุนามได้
คาสั่ง จงหาผลลัพธ์ต่อไปนี้
1. 5xy + 7xy – 3xy
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2. 15abc – 18abc + 9abc
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3. (–10x2
y3
) + 5x2
y3
– 9x2
y3
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4. 18p3
q4
– (–5p3
q4
) + 10p3
q4
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5. 6m2
n + m2
n – (– m2
n)
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2. 6. (–2xyz) – (–20xyz) + (–9xyz)
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7. (5xy – 9xy) + (–13xy – 7xy)
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8. (–14a2
b – 9 a2
b) – (–3a2
b + 6a2
b)
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9. 8m3
– (6m3
– 9m3
) + 15m3
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10. (7y4
– 9y4
) + (15y4
– 13y4
)
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