中学二年生数学 単項式と多項式の計算問題

多項式の足し算と引き算は理解しているものとします。
多項式の足し算と引き算の計算問題

1次の計算をしなさい。

(1) (2(x + 1) )

(2) (3(4x + 2) )

(3) (9(x - 5) )

(4) (-4(3x + 2) )

(5) (-2(x + 3) )

(6) (-5(2x - 1) )

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1

(1) (2x + 2 )

(2) (12x + 6 )

(3) (9x - 45 )

(4) (-12x - 8 )

(5) (-2x - 6 )

(6) (-10x + 5 )

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2次の計算をしなさい。

(1) (0.2(2x + 6) )

(2) (1.5(3x + 1) )

(3) (3.14(x - 6) )

(4) (-2.4(5x + 10) )

(5) (-1.25(x + 8) )

(6) (-0.4(-2x + 5) )

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2

(1) (0.4x + 1.2 )

(2) (4.5x + 1.5 )

(3) (3.14x - 18.84 )

(4) (-12x - 24 )

(5) (-1.25x - 1 )

(6) (0.8x - 2 )

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3次の計算をしなさい。

(1) (\dfrac{2}{5}(15x - 20) )

(2) (\dfrac{1}{3}(6x + 9) )

(3) (\dfrac{7}{4}(-2x - 3) )

(4) (-\dfrac{1}{2}(4x + 2) )

(5) (-\dfrac{3}{7}(14x - 21) )

(6) (-\dfrac{1}{8}(-3x - 1) )

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3

(1) (6x - 8 )

(2) (2x + 3 )

(3) (-\dfrac{7}{2}x - \dfrac{21}{4} )

(4) (-2x - 1 )

(5) (-6x + 9 )

(6) (\dfrac{3}{8}x + \dfrac{1}{8} )

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4次の計算をしなさい。

(1) (3(2x - 5) + 2(-x + 2) )

(2) (5(x + 1) - 4(x - 1) )

(3) (1.5(2x + 3) + 0.5(4x - 9) )

(4) (3.14(x + 1) - 3.14(-2x + 5) )

(5) (\dfrac{1}{2}(4x - 5) + \dfrac{3}{4}(8x - 1) )

(6) (\dfrac{5}{6}(x + 6) - \dfrac{2}{3}(x - 3) )

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4

(1) (4x - 11 )

(2) (x + 9 )

(3) (5x )

(4) (9.42x -12.56 )

(5) (8x - \dfrac{13}{4} )

(6) (\dfrac{1}{6}x + 8 )

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おしらせ

受験生、大学生、数学の好きな大人の方に向けて、センター数ⅡBの過去問を解く勉強会を開催します。

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