# 1ページ目の練習 文字式の掛け算・割り算 数学・算数の教材公開ページ

20

## 全文

(1)

(1) b4×b (2) x3×x2

(3) n4

×n2 (4) y2×y2

(5) n×n4 (6) m4×m4

(7) 3b2

×(−b2) (8) 2x×(−x)

(9) b×b3 (10)

(−3n3)×(−2n3)

(11) (−3y)×(−4y2) (12) 4z×(−2z4)

(13) z4

×z3×z3 (14) b×b4 ×b4

(15) b2×b4×b4 (16) x2×x3×x4

(17) (−z)×(−4z4)×(−4z) (18) (−n4)×4n4×(−3n2)

(2)

(1) b4×b

5

(2) x3×x2

5

(3) n4

×n2

6

(4) y2

×y2

4

(5) n×n4

5

(6) m4×m4

8

(7) 3b2

×(−b2)

4

(8) 2x×(−x)

2

(9) b×b3

## b

4

(10) (−3n3)×(−2n3)

## n

6

(11) (−3y)×(−4y2)

3

(12) 4z×(−2z4)

5

(13) z4

×z3×z3

10

(14) b×b4

×b4

9

(15) b2×b4×b4

10

(16) x2×x3×x4

## x

9

(17) (−z)×(−4z4)×(−4z)

## z

6

(18) (−n4)×4n4×(−3n2)

10

(19) (−2b)×b3×3b

## b

5

(20) 3x3

(3)

(1) n×n2 (2) b4×b2

(3) n2

×n4 (4) c3×c2

(5) x4 ×x4 (6) n×n4

(7) (−2x2)×(−x2) (8) 4y2×(−3y2)

(9) 3m3

×(−2m4) (10) (−b3)×3b2

(11) (−y)×(−3y4) (12) 4y×(−y4)

(13) c2

×c2×c2 (14) x2×x×x3

(15) n3×n×n2 (16) a4×a4×a2

(17) 2a4

×(−4a2)×a (18) 4y3×(−2y)×(−2y2)

(19) a4

(4)

(1) n×n2

3

(2) b4×b2

6

(3) n2

×n4

6

(4) c3

×c2

5

(5) x4 ×x4

8

(6) n×n4

5

(7) (−2x2)×(−x2)

4

(8) 4y2

×(−3y2)

4

(9) 3m3

×(−2m4)

7

(10) (−b3)×3b2

5

(11) (−y)×(−3y4)

5

(12) 4y×(−y4)

5

(13) c2

×c2×c2

6

(14) x2

×x×x3

6

(15) n3×n×n2

6

(16) a4×a4×a2

10

(17) 2a4

×(−4a2)×a

7

(18) 4y3

×(−2y)×(−2y2)

6

(19) a4

×(−3a)×3a2

7

(20) 4z4

×4z×(−4z)

## z

(5)

(1) n4×n (2) x2×x

(3) n2

×n4 (4) z4×z3

(5) x×x2 (6) x×x

(7) (−4z4)×2z2 (8) 4b3×(−2b3)

(9) (−3b3)×(−3b2) (10) 4a×(−3a4)

(11) (−2a)×a4 (12) 4y3×4y

(13) b3

×b×b4 (14) c4×c×c2

(15) b2×b2×b2 (16) c3×c4×c2

(17) 3y3

×4y3×(−4y4) (18) (−4n3)×2n2×(−n4)

(6)

(1) n4×n

5

(2) x2×x

3

(3) n2

×n4

6

(4) z4

×z3

7

(5) x×x2

3

(6) x×x

2

(7) (−4z4)×2z2

6

(8) 4b3

×(−2b3)

## b

6

(9) (−3b3)×(−3b2)

5

(10) 4a×(−3a4)

5

(11) (−2a)×a4

5

(12) 4y3

×4y

4

(13) b3

×b×b4

8

(14) c4

×c×c2

7

(15) b2×b2×b2

6

(16) c3×c4×c2

9

(17) 3y3

×4y3×(−4y4)

## y

10

(18) (−4n3)×2n2×(−n4)

## n

9

(19) (−4z3)×(−2z)×(−4z3)

## z

7

(20) (−4a3)×(−3a)×(−2a2)

## a

(7)

(1) b×b3 (2) y4×y3

(3) n×n4 (4)

m4

×m2

(5) m3×m2 (6) n3×n3

(7) (−3c3)×3c (8) b3×(−2b3)

(9) (−3a)×3a3 (10) 3z×(−3z)

(11) 2x×(−3x2) (12) 2y×2y2

(13) b×b3

×b (14) b4×b3×b

(15) a4×a2×a2 (16) z×z×z

(17) c3×3c2

×(−4c3) (18) 4a2×2a3×(−4a4)

(8)

(1) b×b3

4

(2) y4×y3

7

(3) n×n4

5

(4) m4

×m2

6

(5) m3×m2

5

(6) n3×n3

6

(7) (−3c3)×3c

4

(8) b3×(−2b3)

6

(9) (−3a)×3a3

4

(10) 3z×(−3z)

2

(11) 2x×(−3x2)

3

(12) 2y×2y2

3

(13) b×b3

×b

5

(14) b4

×b3×b

8

(15) a4×a2×a2

8

(16) z×z×z

3

(17) c3×3c2

×(−4c3)

8

(18) 4a2

×2a3×(−4a4)

## a

9

(19) (−b4)×(−4b)×3b

## b

6

(20) (−4a2)×2a4×(−3a3)

(9)

(1) a4×a3 (2) y×y4

(3) m2

×m4 (4) b2×b3

(5) x4 ×x4 (6) b4×b4

(7) y4×4y (8) (−3y)×3y3

(9) n4

×(−3n2) (10) (−4x)×3x4

(11) c×3c4 (12) 2n4×n4

(13) z×z2

×z3 (14) x3×x2×x

(15) z3×z3×z4 (16) b3×b×b2

(17) 2n4

×2n×(−n) (18) (−b2)×3b4×(−4b2)

(19) n3

(10)

(1) a4×a3

7

(2) y×y4

5

(3) m2

×m4

6

(4) b2

×b3

5

(5) x4 ×x4

8

(6) b4×b4

8

(7) y4×4y

5

(8) (−3y)×3y3

4

(9) n4

×(−3n2)

6

(10) (−4x)×3x4

5

(11) c×3c4

5

(12) 2n4

×n4

8

(13) z×z2

×z3

6

(14) x3

×x2×x

6

(15) z3×z3×z4

10

(16) b3×b×b2

6

(17) 2n4

×2n×(−n)

## n

6

(18) (−b2)×3b4×(−4b2)

8

(19) n3

×4n3×2n2

8

(20) 2m2

×(−m4)×3m

## m

(11)

(1) y×y3 (2) b4×b3

(3) n2

×n3 (4) b3×b4

(5) z4×z (6) z3×z4

(7) 3x×x2 (8) (−3c4)×2c

(9) (−4z2)×z4 (10) 3m×(−4m)

(11) (−2c3)×3c4 (12) (−2m3)×2m4

(13) n×n×n4 (14)

b4

×b3×b3

(15) a3×a×a3 (16) a4×a3×a

(17) 4m×(−3m)×4m4 (18) 2b2×3b3 ×(−2b2)

(12)

(1) y×y3

4

(2) b4×b3

7

(3) n2

×n3

5

(4) b3

×b4

7

(5) z4×z

5

(6) z3×z4

7

(7) 3x×x2

3

(8) (−3c4)×2c

5

(9) (−4z2)×z4

6

(10) 3m×(−4m)

2

(11) (−2c3)×3c4

7

(12) (−2m3)×2m4

7

(13) n×n×n4

6

(14) b4

×b3×b3

10

(15) a3×a×a3

7

(16) a4×a3×a

## a

8

(17) 4m×(−3m)×4m4

6

(18) 2b2

×3b3 ×(−2b2)

## b

7

(19) n×(−3n3)×(−2n3)

## n

7

(20) 4x×(−3x2)×4x4

## x

(13)

(1) a×a4 (2) z3×z4

(3) c×c2 (4)

c4

×c

(5) a4×a4 (6) b×b3

(7) (−y3)×(−y) (8) (−4x2)×x4

(9) (−2n)×(−3n2) (10) a3×3a2

(11) 3c4

×4c4 (12) 3b3×4b2

(13) x4

×x×x3 (14) n×n×n

(15) m3×m4×m3 (16) b4×b4×b3

(17) (−4z4)×(−2z4)×(−4z2) (18) (−2m4)×(−m3)×2m4

(14)

(1) a×a4

5

(2) z3×z4

7

(3) c×c2

3

(4) c4

×c

5

(5) a4×a4

8

(6) b×b3

4

(7) (−y3)×(−y)

4

(8) (−4x2)×x4

6

(9) (−2n)×(−3n2)

3

(10) a3

×3a2

5

(11) 3c4

×4c4

8

(12) 3b3

×4b2

5

(13) x4

×x×x3

8

(14) n×n×n

3

(15) m3×m4×m3

10

(16) b4×b4×b3

## b

11

(17) (−4z4)×(−2z4)×(−4z2)

## z

10

(18) (−2m4)×(−m3)×2m4

## m

11

(19) (−2n4)×(−4n)×4n3

## n

8

(20) c3

×(−2c2)×(−4c4)

(15)

(1) a3×a4 (2) a2×a2

(3) x4

×x2 (4) n4×n2

(5) m2×m (6) n2×n

(7) z2×z4 (8) (−4n2)×2n3

(9) (−2a)×(−3a) (10) b2×(−2b4)

(11) n4×(−4n) (12) 2y3×3y4

(13) m3

×m2×m2 (14) b4×b4×b

(15) x4 ×x4×x4 (16) a4×a3×a

(17) 3y×y3×(−2y) (18) 4n4×3n3×3n2

(16)

(1) a3×a4

7

(2) a2×a2

4

(3) x4

×x2

6

(4) n4

×n2

6

(5) m2×m

3

(6) n2×n

3

(7) z2×z4

6

(8) (−4n2)×2n3

5

(9) (−2a)×(−3a)

2

(10) b2

×(−2b4)

6

(11) n4×(−4n)

5

(12) 2y3

×3y4

7

(13) m3

×m2×m2

7

(14) b4

×b4×b

9

(15) x4 ×x4×x4

12

(16) a4×a3×a

8

(17) 3y×y3×(−2y)

5

(18) 4n4

×3n3×3n2

## n

9

(19) (−x4)×4x×(−x2)

## x

7

(20) (−3z)×(−2z)×(−z2)

## z

(17)

(1) n3×n4 (2) x×x4

(3) a×a3 (4)

c2

×c3

(5) c3×c3 (6) z4×z

(7) (−3x4)×3x2 (8) (−2z2)×4z4

(9) (−c2)×(−3c4) (10) (−2z2)×(−3z)

(11) 2c×(−3c) (12) (−a3)×4a2

(13) m×m3

×m (14) b4×b4×b4

(15) c4×c2×c4 (16) y3×y4×y2

(17) a3×3a2

×(−3a3) (18) a4×(−2a3)×(−2a3)

(19) 3z2

(18)

(1) n3×n4

7

(2) x×x4

5

(3) a×a3

4

(4) c2

×c3

5

(5) c3×c3

6

(6) z4×z

5

(7) (−3x4)×3x2

6

(8) (−2z2)×4z4

6

(9) (−c2)×(−3c4)

## c

6

(10) (−2z2)×(−3z)

3

(11) 2c×(−3c)

2

(12) (−a3)×4a2

5

(13) m×m3

×m

5

(14) b4

×b4×b4

12

(15) c4×c2×c4

10

(16) y3×y4×y2

9

(17) a3×3a2

×(−3a3)

## a

8

(18) a4×(−2a3)×(−2a3)

10

(19) 3z2

×3z×2z3

## z

6

(20) (−2x4)×(−2x)×(−4x2)

## x

(19)

(1) x2 ×x (2) b2×b2

(3) m3

×m2 (4) n4×n2

(5) b2×b3 (6) b4×b3

(7) (−a4)×3a2 (8) (−4x4)×(−x)

(9) (−3n)×n3 (10) 4m×(−2m4)

(11) z×(−2z3) (12) 3a3×(−4a4)

(13) n3

×n4×n (14) c4×c4×c3

(15) b3×b4×b3 (16) a×a2×a2

(17) b×(−2b2)×(−3b2) (18) (−4a)×2a×(−4a4)

(20)

(1) x2 ×x

3

(2) b2×b2

4

(3) m3

×m2

5

(4) n4

×n2

6

(5) b2×b3

5

(6) b4×b3

7

(7) (−a4)×3a2

6

(8) (−4x4)×(−x)

5

(9) (−3n)×n3

4

(10) 4m×(−2m4)

5

(11) z×(−2z3)

4

(12) 3a3

×(−4a4)

7

(13) n3

×n4×n

8

(14) c4

×c4×c3

11

(15) b3×b4×b3

10

(16) a×a2×a2

## a

5

(17) b×(−2b2)×(−3b2)

## b

5

(18) (−4a)×2a×(−4a4)

## a

6

(19) (−4c2)×c2×(−3c)

## c

5

(20) (−2c)×4c4×4c3

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